Question

what is x when 3x+20=2x-10

Answer 1

-30

Answer 2

Subtract 2x + 20 from both sides.

Answer 3

first we need to arrange it - bring all x to one side and numbers to another.
so we get:
3x-2x=-10-20
as you know, when we bring numbers and x to another side we change signs-that is why we got this expression
now we just solve it:
x=-30