-3(1+7x)=-255

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Solution for -3(1+7x)=-255 equation: 


Simplifying
-3(1 + 7x) = -255
(1 * -3 + 7x * -3) = -255
(-3 + -21x) = -255

Solving
-3 + -21x = -255

Solving for variable 'x'.

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

Add '3' to each side of the equation.
-3 + 3 + -21x = -255 + 3

Combine like terms: -3 + 3 = 0
0 + -21x = -255 + 3
-21x = -255 + 3

Combine like terms: -255 + 3 = -252
-21x = -252

Divide each side by '-21'.
x = 12

Simplifying
x = 12

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