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

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


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

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

Reorder the terms:
-20 + 4x + -5(7 + x) = 9x
-20 + 4x + (7 * -5 + x * -5) = 9x
-20 + 4x + (-35 + -5x) = 9x

Reorder the terms:
-20 + -35 + 4x + -5x = 9x

Combine like terms: -20 + -35 = -55
-55 + 4x + -5x = 9x

Combine like terms: 4x + -5x = -1x
-55 + -1x = 9x

Solving
-55 + -1x = 9x

Solving for variable 'x'.

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

Add '-9x' to each side of the equation.
-55 + -1x + -9x = 9x + -9x

Combine like terms: -1x + -9x = -10x
-55 + -10x = 9x + -9x

Combine like terms: 9x + -9x = 0
-55 + -10x = 0

Add '55' to each side of the equation.
-55 + 55 + -10x = 0 + 55

Combine like terms: -55 + 55 = 0
0 + -10x = 0 + 55
-10x = 0 + 55

Combine like terms: 0 + 55 = 55
-10x = 55

Divide each side by '-10'.
x = -5.5

Simplifying
x = -5.5

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