3x+17+15x-21=90

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Solution for 3x+17+15x-21=90 equation:


Simplifying
3x + 17 + 15x + -21 = 90

Reorder the terms:
17 + -21 + 3x + 15x = 90

Combine like terms: 17 + -21 = -4
-4 + 3x + 15x = 90

Combine like terms: 3x + 15x = 18x
-4 + 18x = 90

Solving
-4 + 18x = 90

Solving for variable 'x'.

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

Add '4' to each side of the equation.
-4 + 4 + 18x = 90 + 4

Combine like terms: -4 + 4 = 0
0 + 18x = 90 + 4
18x = 90 + 4

Combine like terms: 90 + 4 = 94
18x = 94

Divide each side by '18'.
x = 5.222222222

Simplifying
x = 5.222222222

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