7(-3x-7)=-133

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Solution for 7(-3x-7)=-133 equation: 


Simplifying
7(-3x + -7) = -133

Reorder the terms:
7(-7 + -3x) = -133
(-7 * 7 + -3x * 7) = -133
(-49 + -21x) = -133

Solving
-49 + -21x = -133

Solving for variable 'x'.

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

Add '49' to each side of the equation.
-49 + 49 + -21x = -133 + 49

Combine like terms: -49 + 49 = 0
0 + -21x = -133 + 49
-21x = -133 + 49

Combine like terms: -133 + 49 = -84
-21x = -84

Divide each side by '-21'.
x = 4

Simplifying
x = 4

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