3x-1+4x-12=90

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Solution for 3x-1+4x-12=90 equation:


Simplifying
3x + -1 + 4x + -12 = 90

Reorder the terms:
-1 + -12 + 3x + 4x = 90

Combine like terms: -1 + -12 = -13
-13 + 3x + 4x = 90

Combine like terms: 3x + 4x = 7x
-13 + 7x = 90

Solving
-13 + 7x = 90

Solving for variable 'x'.

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

Add '13' to each side of the equation.
-13 + 13 + 7x = 90 + 13

Combine like terms: -13 + 13 = 0
0 + 7x = 90 + 13
7x = 90 + 13

Combine like terms: 90 + 13 = 103
7x = 103

Divide each side by '7'.
x = 14.71428571

Simplifying
x = 14.71428571

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