Question

15 POINTS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

which could be the first step in sloving the equation 2.5x + 1.2 = 1.2x + 4.2


A. add 4.2 to each side

B. divide both sides by 1.2x

C. add 2.5x to each side

D. subtract 1.2 from both sides

Answer 1

Answer: D

Explanation: Since you're trying to isolate x, you would either subtract 1.2x from both sides or subtract 1.2 from both sides. Since there is not an option to subtract 1.2x from both sides, the answer would be D.

Answer 2

D. subtract 1.2 from both sides

Explanation:

It is the subtraction property of equality.

`2.5x = 1.2x + 4.2 - 1.2 \\ 2.5x = 1.2x + 3`