21x+12+35x-6=90

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Solution for 21x+12+35x-6=90 equation:


Simplifying
21x + 12 + 35x + -6 = 90

Reorder the terms:
12 + -6 + 21x + 35x = 90

Combine like terms: 12 + -6 = 6
6 + 21x + 35x = 90

Combine like terms: 21x + 35x = 56x
6 + 56x = 90

Solving
6 + 56x = 90

Solving for variable 'x'.

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

Add '-6' to each side of the equation.
6 + -6 + 56x = 90 + -6

Combine like terms: 6 + -6 = 0
0 + 56x = 90 + -6
56x = 90 + -6

Combine like terms: 90 + -6 = 84
56x = 84

Divide each side by '56'.
x = 1.5

Simplifying
x = 1.5

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