Question

Whats the next step in this equation 3x + 7= x - 21

Answer 1

Subtract x from both sides

Explanation:

3x+7=x-21

3x=28=x

28=-2x

28/2=14

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Answer 2

Subtract both sides by x

Explanation:

Because x is on both sides, we want x to only be on one side of the equation, so the next step should be to subtract both sides by x so x is eliminated from the right side.

3x+7=x-21

2x+7=-21

2x=-28

x=-14

And the solution becomes x=-14