-40=7(1-x)+4(3x-3)

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Solution for -40=7(1-x)+4(3x-3) equation:


Simplifying
-40 = 7(1 + -1x) + 4(3x + -3)
-40 = (1 * 7 + -1x * 7) + 4(3x + -3)
-40 = (7 + -7x) + 4(3x + -3)

Reorder the terms:
-40 = 7 + -7x + 4(-3 + 3x)
-40 = 7 + -7x + (-3 * 4 + 3x * 4)
-40 = 7 + -7x + (-12 + 12x)

Reorder the terms:
-40 = 7 + -12 + -7x + 12x

Combine like terms: 7 + -12 = -5
-40 = -5 + -7x + 12x

Combine like terms: -7x + 12x = 5x
-40 = -5 + 5x

Solving
-40 = -5 + 5x

Solving for variable 'x'.

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

Add '-5x' to each side of the equation.
-40 + -5x = -5 + 5x + -5x

Combine like terms: 5x + -5x = 0
-40 + -5x = -5 + 0
-40 + -5x = -5

Add '40' to each side of the equation.
-40 + 40 + -5x = -5 + 40

Combine like terms: -40 + 40 = 0
0 + -5x = -5 + 40
-5x = -5 + 40

Combine like terms: -5 + 40 = 35
-5x = 35

Divide each side by '-5'.
x = -7

Simplifying
x = -7

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