3y+x+y-x=90

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Solution for 3y+x+y-x=90 equation: 


Simplifying
3y + x + y + -1x = 90

Reorder the terms:
x + -1x + 3y + y = 90

Combine like terms: x + -1x = 0
0 + 3y + y = 90
3y + y = 90

Combine like terms: 3y + y = 4y
4y = 90

Solving
4y = 90

Solving for variable 'y'.

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

Divide each side by '4'.
y = 22.5

Simplifying
y = 22.5

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