Question

Which is a correct first step for solving this equation? 4x=7+3(2x−5)

Answer 1

x=4

Explanation:

you have to do the ( ) first then you combine like terms and then you add them up and boom you got the answer

Answer 2

Explanation:

The easiest first step is to remove the brackets. Other things could be done, but they are done just because you can.

4x = 7 + 3*2x - 5*3 Just to show you more, I'll keep going.

4x = 7 + 6x - 15 Combine the minus 15 and 7

4x = 6x + 7 - 15

4x = 6x - 8 Now add 8 to both sides. It's a toss up of what to do

4x + 8 = 6x - 8 + 8

4x + 8 = 6x Subtract 5x from both sides

4x - 4x + 8 = 6x - 4x

8 = 2x Divide by 2

x = 4

The steps usually follow this order.