X+y=-3+7

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Solution for X+y=-3+7 equation: 


Simplifying
X + y = -3 + 7

Combine like terms: -3 + 7 = 4
X + y = 4

Solving
X + y = 4

Solving for variable 'X'.

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

Add '-1y' to each side of the equation.
X + y + -1y = 4 + -1y

Combine like terms: y + -1y = 0
X + 0 = 4 + -1y
X = 4 + -1y

Simplifying
X = 4 + -1y

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