4x-20+3x-20=90

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Solution for 4x-20+3x-20=90 equation:


Simplifying
4x + -20 + 3x + -20 = 90

Reorder the terms:
-20 + -20 + 4x + 3x = 90

Combine like terms: -20 + -20 = -40
-40 + 4x + 3x = 90

Combine like terms: 4x + 3x = 7x
-40 + 7x = 90

Solving
-40 + 7x = 90

Solving for variable 'x'.

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

Add '40' to each side of the equation.
-40 + 40 + 7x = 90 + 40

Combine like terms: -40 + 40 = 0
0 + 7x = 90 + 40
7x = 90 + 40

Combine like terms: 90 + 40 = 130
7x = 130

Divide each side by '7'.
x = 18.57142857

Simplifying
x = 18.57142857

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