100-7x=40+12x

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Solution for 100-7x=40+12x equation:


Simplifying
100 + -7x = 40 + 12x

Solving
100 + -7x = 40 + 12x

Solving for variable 'x'.

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

Add '-12x' to each side of the equation.
100 + -7x + -12x = 40 + 12x + -12x

Combine like terms: -7x + -12x = -19x
100 + -19x = 40 + 12x + -12x

Combine like terms: 12x + -12x = 0
100 + -19x = 40 + 0
100 + -19x = 40

Add '-100' to each side of the equation.
100 + -100 + -19x = 40 + -100

Combine like terms: 100 + -100 = 0
0 + -19x = 40 + -100
-19x = 40 + -100

Combine like terms: 40 + -100 = -60
-19x = -60

Divide each side by '-19'.
x = 3.157894737

Simplifying
x = 3.157894737

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