Question

8x – 2 – 5x + 7 = infinitely many solutions

Answer 1

8x - 2 - 5x + 7 =3x+5

Explanation:

8x - 2 - 5x + 7

Combine like terms

3x + 5

For an equation to have infinitely many solutions, x must have no impact on the equation. Thus it must be:

3x+5=3x+5

I think this is what you mean?

Answer 2

3x+5

Explanation:

Collecting like terms.

8x-2-5x+7

8x-5x-2+7

3x+5