3(7-5x)=-144

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Solution for 3(7-5x)=-144 equation: 


Simplifying
3(7 + -5x) = -144
(7 * 3 + -5x * 3) = -144
(21 + -15x) = -144

Solving
21 + -15x = -144

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 = -144 + -21

Combine like terms: 21 + -21 = 0
0 + -15x = -144 + -21
-15x = -144 + -21

Combine like terms: -144 + -21 = -165
-15x = -165

Divide each side by '-15'.
x = 11

Simplifying
x = 11

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