(1 point)
3x+13 = x+27
Step 1: -x - x
2x+13=
2x+13 = 27
Step 2: 1-13 -13
= 14
14
Step 3: 2
2
O additive identity
O additive inverse
O substitution
O subtraction property of equality
Answer:
D. Subtraction property of equality.
Step-by-step explanation:
We have been given an equation . We are asked the property used in the second step of equation to solve it.
Step 1:
Step 2:
We can see that is subtracted from both sides of equation.
We know that subtracting same quantity from both sides of equation is known as subtraction property of equality.
Therefore, option D is the correct choice.
Answer:
In step 2 we applied the subtraction property of equality
Step-by-step explanation:
The subtraction property of equality tells us that if we subtract from one side of an equation, we also must subtract from the other side of the equation to keep the equation the same.
In step 2 we did that:
2x + 13 - 13 = 2x + 27 - 13
(2x + 0 = 2x + 14)
2x = 2x + 14
f(x)=2x+3
What is the value of f(−2)?
f(−2) = ?
Answer:
f(- 2) = - 1
Step-by-step explanation:
To evaluate f(- 2) substitute x = - 2 into f(x), that is
f(- 2) = 2(- 2) + 3 = - 4 + 3 = - 1
For + 3, then
f(- 2) = + 3 = + 3 = 3.25