-3(7+5x)=-141

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Solution for -3(7+5x)=-141 equation: 


Simplifying
-3(7 + 5x) = -141
(7 * -3 + 5x * -3) = -141
(-21 + -15x) = -141

Solving
-21 + -15x = -141

Solving for variable 'x'.

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

Add '21' to each side of the equation.
-21 + 21 + -15x = -141 + 21

Combine like terms: -21 + 21 = 0
0 + -15x = -141 + 21
-15x = -141 + 21

Combine like terms: -141 + 21 = -120
-15x = -120

Divide each side by '-15'.
x = 8

Simplifying
x = 8

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