Hello David,
The easiest way to solve this equation is to simplify it then find x
-45 = x + (-3) + 50
Step 1: -45 = X - 3 + 50 (multiply the positive sign outside the parentheses by the sign inside the parenthesis, +*- = -)
Step 2: -45 = X + 47 ( subtract 3 from the 50)
Step 3: -45 - 47 = X + 47 - 47 (subtract 47 from both sides)
answer: -92 = X