-3(x+5)-42=4-40

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Solution for -3(x+5)-42=4-40 equation: 


Simplifying
-3(x + 5) + -42 = 4 + -40

Reorder the terms:
-3(5 + x) + -42 = 4 + -40
(5 * -3 + x * -3) + -42 = 4 + -40
(-15 + -3x) + -42 = 4 + -40

Reorder the terms:
-15 + -42 + -3x = 4 + -40

Combine like terms: -15 + -42 = -57
-57 + -3x = 4 + -40

Combine like terms: 4 + -40 = -36
-57 + -3x = -36

Solving
-57 + -3x = -36

Solving for variable 'x'.

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

Add '57' to each side of the equation.
-57 + 57 + -3x = -36 + 57

Combine like terms: -57 + 57 = 0
0 + -3x = -36 + 57
-3x = -36 + 57

Combine like terms: -36 + 57 = 21
-3x = 21

Divide each side by '-3'.
x = -7

Simplifying
x = -7

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