12+5x=7x+3 solve for x. show your work.

Answers

Answer 1
Answer: 1st: 12+5x=7x+3-3
2nd: 9+5x=7x
3rd: 9+5x-5x=7x-5x
4th: 9=2x
5th: 9/2=2x/2
6th x=4.5
CHECK:12 +5x4.5=7x4.5+3
12+22.5=31.5+3
34.5=34.5
X=4.5

Answer 2
Answer: The first thing you should do is get x on one side.

12+5x=7x+3

12+5x-5x=7x-5x+3

12=2x+3
Now that you've done that you must get the 2x by itself. You can do this by subtracting 3 from both sides.

12-3=2x+3-3

9=2x

Remember, you would only subtract if the number next to x is positive. If it is negative you would add. (Ex. 12=5x-3,12+3=5x-3+3, 15/5=5x/5, 3=x)

Now, you must divide both sides by 2 to get x by itself.

9/2=2x/2

Therefore your answer is 4.5=x
Now you have your X by itself. Hope this helps.

Related Questions

.. Failure to yield the right-of-way to other drivers is one of the top 5 causes of accidents in the US.A.TrueB.False
The surface area for a rectangular prism with a square base is given by the expression. 2s2+4sh, where side s is side length of the
The cost for a bussiness to make greeting cards can be divided into one-time costs (e.g., a printing machine) and repeated costs(e.g., ink and paper) suppose the total cost to make 300 cards is $800 and the total cost to make 550 cards is $1.300 what is the total cost to make 1,000 cards? round your answer to the nearest dollar a $2,000 b $2,200 c $2,364 d $2,667
So I have no idea how this even works so yeah can somebody please help me
Solve and check 2/3y =6 A.1/9 B.1/4C.9D.4

In January Melissa spent 20 minutes on her cell phone each day if her monthly bill for 31 days was $105.40 how much money does she pay per minute

Answers

20*31=620

620/105.40=5.882352941176471

Answer is she spent $5.88 per minute 

is 14 correct, can I get some help on 16 and 18, and do I need to find both x and y intercepts?? pls help asap :)

Answers

14 isn't correct.

14. y : 6  x : -2

16. y : 1 x : -1/3

18. y : -5/3  x : -1

PLEASE HELPThe value of y varies directly with x. When y=30, x=0.75. What is the value of y when x=5.25?

Answers

The value of y when x = 5.25 is 210.

Given that the value of y varies directly with x.

When y = 30, x = 0.75.

We need to find the value of y when x = 5.25,

If the value of y varies directly with x, it means that the relationship between y and x can be expressed as:

y = kx

Where "k" is the constant of proportionality. To find the value of "k," we can use the given information:

When y = 30, x = 0.75:

30 = k × 0.75

Now, solve for "k":

k = 30 / 0.75

k = 40

Now that we have the value of "k," we can use it to find the value of y when x = 5.25:

y = k x

y = 40 × 5.25

y = 210

So, when x = 5.25, the value of y is 210.

Learn more about direct variation click;

brainly.com/question/33766943

#SPJ3

if x = 5.25 then y = 210

A car travels 360 miles on 18 gallons of gas ,whats the unit rate ?

Answers

The answer would be 20 miles:1 gallon

Which equation can be used to find the perimeter of a regular hexagon with sides of length 14 inchesA. P=6(14)
B.P=6+14
C.P=14 DIVIDED BY 6
D.P=2(6)+2(14) 

Answers

The answer would be A. 6 (14)
number A . p=6(14) is the correct answer

Can someone help me real fast?Which association best describes the scatter plot?



A.
negative linear association

B.
negative nonlinear association

C.
positive linear association

D.
positive nonlinear association

Answers

i would say C. a positive association

The answer to the problem is C. positive nonlinear association.