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

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


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

Reorder the terms:
3(-9 + x) + -4(x + 7) = 9x
(-9 * 3 + x * 3) + -4(x + 7) = 9x
(-27 + 3x) + -4(x + 7) = 9x

Reorder the terms:
-27 + 3x + -4(7 + x) = 9x
-27 + 3x + (7 * -4 + x * -4) = 9x
-27 + 3x + (-28 + -4x) = 9x

Reorder the terms:
-27 + -28 + 3x + -4x = 9x

Combine like terms: -27 + -28 = -55
-55 + 3x + -4x = 9x

Combine like terms: 3x + -4x = -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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