100=7x+6x+9

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Solution for 100=7x+6x+9 equation:


Simplifying
100 = 7x + 6x + 9

Reorder the terms:
100 = 9 + 7x + 6x

Combine like terms: 7x + 6x = 13x
100 = 9 + 13x

Solving
100 = 9 + 13x

Solving for variable 'x'.

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

Add '-13x' to each side of the equation.
100 + -13x = 9 + 13x + -13x

Combine like terms: 13x + -13x = 0
100 + -13x = 9 + 0
100 + -13x = 9

Add '-100' to each side of the equation.
100 + -100 + -13x = 9 + -100

Combine like terms: 100 + -100 = 0
0 + -13x = 9 + -100
-13x = 9 + -100

Combine like terms: 9 + -100 = -91
-13x = -91

Divide each side by '-13'.
x = 7

Simplifying
x = 7

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