100-x+300=200

how do I solve for x

100 - x + 300 = 200

1: Simplify both sides of the equation.

100 - x + 300 = 200 100 + - x + 300 = 200 (-x) + (100 + 300) = 200

(Combine Like Terms)

-x + 400 = 200 - x + 400 = 200

2: Subtract 400 from both sides.

-x + 400 - 400 = 200 - 400 - x = - 200

3: Divide both sides by - 1.

-x - 1 = - 200 - 1

x = 200