81-40x=-4(10x+9)

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Solution for 81-40x=-4(10x+9) equation: 


Simplifying
81 + -40x = -4(10x + 9)

Reorder the terms:
81 + -40x = -4(9 + 10x)
81 + -40x = (9 * -4 + 10x * -4)
81 + -40x = (-36 + -40x)

Add '40x' to each side of the equation.
81 + -40x + 40x = -36 + -40x + 40x

Combine like terms: -40x + 40x = 0
81 + 0 = -36 + -40x + 40x
81 = -36 + -40x + 40x

Combine like terms: -40x + 40x = 0
81 = -36 + 0
81 = -36

Solving
81 = -36

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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