7x+12(10-x)=100

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Solution for 7x+12(10-x)=100 equation:


Simplifying
7x + 12(10 + -1x) = 100
7x + (10 * 12 + -1x * 12) = 100
7x + (120 + -12x) = 100

Reorder the terms:
120 + 7x + -12x = 100

Combine like terms: 7x + -12x = -5x
120 + -5x = 100

Solving
120 + -5x = 100

Solving for variable 'x'.

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

Add '-120' to each side of the equation.
120 + -120 + -5x = 100 + -120

Combine like terms: 120 + -120 = 0
0 + -5x = 100 + -120
-5x = 100 + -120

Combine like terms: 100 + -120 = -20
-5x = -20

Divide each side by '-5'.
x = 4

Simplifying
x = 4

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