7=-x+3y

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Solution for 7=-x+3y equation: 


Simplifying
7 = -1x + 3y

Solving
7 = -1x + 3y

Solving for variable 'x'.

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

Add 'x' to each side of the equation.
7 + x = -1x + x + 3y

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

Add '-7' to each side of the equation.
7 + -7 + x = -7 + 3y

Combine like terms: 7 + -7 = 0
0 + x = -7 + 3y
x = -7 + 3y

Simplifying
x = -7 + 3y

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