"5x+57" is not a question. It's just a number. Exactly
what number it is depends on what number 'x' is.
x=-10
If x = 10, then fill in 10 where the x is in the equation. 7 + 5x 7 + 5 X 10 7 + 50 57 The answer is 57.
5x plus 3 does equal 3 plus 5x; commutative law.
-10x + 5x = -5x
x=6
It is: 5x
5x+5x-10 10x-10 is the only answer you can get from this
10x - 5x + 5x = 10x
2x plus 5x simplified is 7x.
-5x^2 - 55x - 120
5x+2x=7x2x + 5x = 7x
3