7x-90=3x-10

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Solution for 7x-90=3x-10 equation:


Simplifying
7x + -90 = 3x + -10

Reorder the terms:
-90 + 7x = 3x + -10

Reorder the terms:
-90 + 7x = -10 + 3x

Solving
-90 + 7x = -10 + 3x

Solving for variable 'x'.

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

Add '-3x' to each side of the equation.
-90 + 7x + -3x = -10 + 3x + -3x

Combine like terms: 7x + -3x = 4x
-90 + 4x = -10 + 3x + -3x

Combine like terms: 3x + -3x = 0
-90 + 4x = -10 + 0
-90 + 4x = -10

Add '90' to each side of the equation.
-90 + 90 + 4x = -10 + 90

Combine like terms: -90 + 90 = 0
0 + 4x = -10 + 90
4x = -10 + 90

Combine like terms: -10 + 90 = 80
4x = 80

Divide each side by '4'.
x = 20

Simplifying
x = 20

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