3(42)+12+2x+40=180

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Solution for 3(42)+12+2x+40=180 equation:


Simplifying
3(42) + 12 + 2x + 40 = 180

Multiply 3 * 42
126 + 12 + 2x + 40 = 180

Reorder the terms:
126 + 12 + 40 + 2x = 180

Combine like terms: 126 + 12 = 138
138 + 40 + 2x = 180

Combine like terms: 138 + 40 = 178
178 + 2x = 180

Solving
178 + 2x = 180

Solving for variable 'x'.

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

Add '-178' to each side of the equation.
178 + -178 + 2x = 180 + -178

Combine like terms: 178 + -178 = 0
0 + 2x = 180 + -178
2x = 180 + -178

Combine like terms: 180 + -178 = 2
2x = 2

Divide each side by '2'.
x = 1

Simplifying
x = 1

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