Answer:
x + 2y - 3.5
Explanation:
Because the only operation to be used is addition, the parentheses can be taken away:
(
x - 5) + (2y - 3.5) + (-
x + 5)
x - 5 + 2y - 3.5 + -
x + 5
Addition of negative numbers is subtraction:
x - 5 + 2y - 3.5 + -
x + 5
x - 5 + 2y - 3.5 -
x + 5
Combine like terms to find the furthest simplification of the equation:
x - 5 + 2y - 3.5 -
x + 5
x - 5 + 2y - 3.5 + 5
x + 2y - 3.5
Finally, simplify the coefficient of x:
x + 2y - 3.5
x + 2y - 3.5
(
x - 5) + (2y - 3.5) + (-
x + 5) =
x + 2y - 3.5