43+(7-x)=90

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Solution for 43+(7-x)=90 equation:


Simplifying
43 + (7 + -1x) = 90

Remove parenthesis around (7 + -1x)
43 + 7 + -1x = 90

Combine like terms: 43 + 7 = 50
50 + -1x = 90

Solving
50 + -1x = 90

Solving for variable 'x'.

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

Add '-50' to each side of the equation.
50 + -50 + -1x = 90 + -50

Combine like terms: 50 + -50 = 0
0 + -1x = 90 + -50
-1x = 90 + -50

Combine like terms: 90 + -50 = 40
-1x = 40

Divide each side by '-1'.
x = -40

Simplifying
x = -40

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