3=2x+7y

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Solution for 3=2x+7y equation: 


Simplifying
3 = 2x + 7y

Solving
3 = 2x + 7y

Solving for variable 'x'.

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

Add '-2x' to each side of the equation.
3 + -2x = 2x + -2x + 7y

Combine like terms: 2x + -2x = 0
3 + -2x = 0 + 7y
3 + -2x = 7y

Add '-3' to each side of the equation.
3 + -3 + -2x = -3 + 7y

Combine like terms: 3 + -3 = 0
0 + -2x = -3 + 7y
-2x = -3 + 7y

Divide each side by '-2'.
x = 1.5 + -3.5y

Simplifying
x = 1.5 + -3.5y

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