7(-1-3x)=-7

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


Simplifying
7(-1 + -3x) = -7
(-1 * 7 + -3x * 7) = -7
(-7 + -21x) = -7

Add '7' to each side of the equation.
-7 + 7 + -21x = -7 + 7

Combine like terms: -7 + 7 = 0
0 + -21x = -7 + 7
-21x = -7 + 7

Combine like terms: -7 + 7 = 0
-21x = 0

Solving
-21x = 0

Solving for variable 'x'.

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

Divide each side by '-21'.
x = 0

Simplifying
x = 0

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