7(x+3)=-4(5-4x)-9x

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Solution for 7(x+3)=-4(5-4x)-9x equation: 


Simplifying
7(x + 3) = -4(5 + -4x) + -9x

Reorder the terms:
7(3 + x) = -4(5 + -4x) + -9x
(3 * 7 + x * 7) = -4(5 + -4x) + -9x
(21 + 7x) = -4(5 + -4x) + -9x
21 + 7x = (5 * -4 + -4x * -4) + -9x
21 + 7x = (-20 + 16x) + -9x

Combine like terms: 16x + -9x = 7x
21 + 7x = -20 + 7x

Add '-7x' to each side of the equation.
21 + 7x + -7x = -20 + 7x + -7x

Combine like terms: 7x + -7x = 0
21 + 0 = -20 + 7x + -7x
21 = -20 + 7x + -7x

Combine like terms: 7x + -7x = 0
21 = -20 + 0
21 = -20

Solving
21 = -20

Couldn't find a variable to solve for.

This equation is invalid, the left and right sides are not equal, therefore there is no solution.

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