78+102+x+y=90

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Solution for 78+102+x+y=90 equation:


Simplifying
78 + 102 + x + y = 90

Combine like terms: 78 + 102 = 180
180 + x + y = 90

Solving
180 + x + y = 90

Solving for variable 'x'.

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

Add '-180' to each side of the equation.
180 + x + -180 + y = 90 + -180

Reorder the terms:
180 + -180 + x + y = 90 + -180

Combine like terms: 180 + -180 = 0
0 + x + y = 90 + -180
x + y = 90 + -180

Combine like terms: 90 + -180 = -90
x + y = -90

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

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

Simplifying
x = -90 + -1y

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