15+(7-x)=40

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Solution for 15+(7-x)=40 equation:


Simplifying
15 + (7 + -1x) = 40

Remove parenthesis around (7 + -1x)
15 + 7 + -1x = 40

Combine like terms: 15 + 7 = 22
22 + -1x = 40

Solving
22 + -1x = 40

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-22' to each side of the equation.
22 + -22 + -1x = 40 + -22

Combine like terms: 22 + -22 = 0
0 + -1x = 40 + -22
-1x = 40 + -22

Combine like terms: 40 + -22 = 18
-1x = 18

Divide each side by '-1'.
x = -18

Simplifying
x = -18

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