(3x-10)+9x=90

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Solution for (3x-10)+9x=90 equation:


Simplifying
(3x + -10) + 9x = 90

Reorder the terms:
(-10 + 3x) + 9x = 90

Remove parenthesis around (-10 + 3x)
-10 + 3x + 9x = 90

Combine like terms: 3x + 9x = 12x
-10 + 12x = 90

Solving
-10 + 12x = 90

Solving for variable 'x'.

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

Add '10' to each side of the equation.
-10 + 10 + 12x = 90 + 10

Combine like terms: -10 + 10 = 0
0 + 12x = 90 + 10
12x = 90 + 10

Combine like terms: 90 + 10 = 100
12x = 100

Divide each side by '12'.
x = 8.333333333

Simplifying
x = 8.333333333

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