120+3(2x-5)=21

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Solution for 120+3(2x-5)=21 equation:


Simplifying
120 + 3(2x + -5) = 21

Reorder the terms:
120 + 3(-5 + 2x) = 21
120 + (-5 * 3 + 2x * 3) = 21
120 + (-15 + 6x) = 21

Combine like terms: 120 + -15 = 105
105 + 6x = 21

Solving
105 + 6x = 21

Solving for variable 'x'.

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

Add '-105' to each side of the equation.
105 + -105 + 6x = 21 + -105

Combine like terms: 105 + -105 = 0
0 + 6x = 21 + -105
6x = 21 + -105

Combine like terms: 21 + -105 = -84
6x = -84

Divide each side by '6'.
x = -14

Simplifying
x = -14

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