2(2x+9y)=-7

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Solution for 2(2x+9y)=-7 equation: 


Simplifying
2(2x + 9y) = -7
(2x * 2 + 9y * 2) = -7
(4x + 18y) = -7

Solving
4x + 18y = -7

Solving for variable 'x'.

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

Add '-18y' to each side of the equation.
4x + 18y + -18y = -7 + -18y

Combine like terms: 18y + -18y = 0
4x + 0 = -7 + -18y
4x = -7 + -18y

Divide each side by '4'.
x = -1.75 + -4.5y

Simplifying
x = -1.75 + -4.5y

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