18+y+x=90

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Solution for 18+y+x=90 equation:


Simplifying
18 + y + x = 90

Reorder the terms:
18 + x + y = 90

Solving
18 + x + y = 90

Solving for variable 'x'.

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

Add '-18' to each side of the equation.
18 + x + -18 + y = 90 + -18

Reorder the terms:
18 + -18 + x + y = 90 + -18

Combine like terms: 18 + -18 = 0
0 + x + y = 90 + -18
x + y = 90 + -18

Combine like terms: 90 + -18 = 72
x + y = 72

Add '-1y' to each side of the equation.
x + y + -1y = 72 + -1y

Combine like terms: y + -1y = 0
x + 0 = 72 + -1y
x = 72 + -1y

Simplifying
x = 72 + -1y

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