120+12(30+x)=900

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Solution for 120+12(30+x)=900 equation:


Simplifying
120 + 12(30 + x) = 900
120 + (30 * 12 + x * 12) = 900
120 + (360 + 12x) = 900

Combine like terms: 120 + 360 = 480
480 + 12x = 900

Solving
480 + 12x = 900

Solving for variable 'x'.

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

Add '-480' to each side of the equation.
480 + -480 + 12x = 900 + -480

Combine like terms: 480 + -480 = 0
0 + 12x = 900 + -480
12x = 900 + -480

Combine like terms: 900 + -480 = 420
12x = 420

Divide each side by '12'.
x = 35

Simplifying
x = 35

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