A.) 2x+6=2
B.) 2(x-4)=6x
A.) 2x+6=2:
Move all terms that don't contain x to the right side and solve.
x=−2
B.) 2(x-4)=6x:
Solve for x by simplifying both sides of the equation, then isolating the variable.
x=−2
C.) 3x+1/2=1/4x+6:
Solve for x by cross multiplying.
x=2
D.) 3x+15=2x+9:
Solve for x by simplifying both sides of the equation, then isolating the variable.
x=−6
Answer with explanation:
Commutative property under subtraction:
If a and b are any two real numbers such that,⇒ a-b =b-a, then we say that ,a and b Satisfy Commutative property under Subtraction.
Take any two real numbers
a=5.6
And,b=7
→a-b
=5.6-7
= -1.4
→b-a
=7-5.6
=1.4
So,a-b≠b-a
Therefore , we can say that, real numbers doesn't satisfy commutative property under subtraction.
Option D: ⇒5-1≠1-5
This statement shows that, commutative property doesn't work under subtraction.
Answer: The original price of her music CD before discount is $20.
Step-by-step explanation:
Let x be the original price of her music CD.
Discount rate = 15%
At discount she saved = $3
So, According to question, our equation becomes
15%x= 3
0.15x= 3
x=$20
Hence, the original price of her music CD before discount is $20.
(a) F = ma , a = F/m
(b) a = F/m, a= -25/10 = -2.5 units
(c)m = F/a, m= 25/5 = 5 units