6(x-7)+3(x-4)=-81

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Solution for 6(x-7)+3(x-4)=-81 equation:


Simplifying
6(x + -7) + 3(x + -4) = -81

Reorder the terms:
6(-7 + x) + 3(x + -4) = -81
(-7 * 6 + x * 6) + 3(x + -4) = -81
(-42 + 6x) + 3(x + -4) = -81

Reorder the terms:
-42 + 6x + 3(-4 + x) = -81
-42 + 6x + (-4 * 3 + x * 3) = -81
-42 + 6x + (-12 + 3x) = -81

Reorder the terms:
-42 + -12 + 6x + 3x = -81

Combine like terms: -42 + -12 = -54
-54 + 6x + 3x = -81

Combine like terms: 6x + 3x = 9x
-54 + 9x = -81

Solving
-54 + 9x = -81

Solving for variable 'x'.

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

Add '54' to each side of the equation.
-54 + 54 + 9x = -81 + 54

Combine like terms: -54 + 54 = 0
0 + 9x = -81 + 54
9x = -81 + 54

Combine like terms: -81 + 54 = -27
9x = -27

Divide each side by '9'.
x = -3

Simplifying
x = -3

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