3x+30+9x+28=90

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Solution for 3x+30+9x+28=90 equation:


Simplifying
3x + 30 + 9x + 28 = 90

Reorder the terms:
30 + 28 + 3x + 9x = 90

Combine like terms: 30 + 28 = 58
58 + 3x + 9x = 90

Combine like terms: 3x + 9x = 12x
58 + 12x = 90

Solving
58 + 12x = 90

Solving for variable 'x'.

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

Add '-58' to each side of the equation.
58 + -58 + 12x = 90 + -58

Combine like terms: 58 + -58 = 0
0 + 12x = 90 + -58
12x = 90 + -58

Combine like terms: 90 + -58 = 32
12x = 32

Divide each side by '12'.
x = 2.666666667

Simplifying
x = 2.666666667

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