30x+80=20x+90

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Solution for 30x+80=20x+90 equation:


Simplifying
30x + 80 = 20x + 90

Reorder the terms:
80 + 30x = 20x + 90

Reorder the terms:
80 + 30x = 90 + 20x

Solving
80 + 30x = 90 + 20x

Solving for variable 'x'.

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

Add '-20x' to each side of the equation.
80 + 30x + -20x = 90 + 20x + -20x

Combine like terms: 30x + -20x = 10x
80 + 10x = 90 + 20x + -20x

Combine like terms: 20x + -20x = 0
80 + 10x = 90 + 0
80 + 10x = 90

Add '-80' to each side of the equation.
80 + -80 + 10x = 90 + -80

Combine like terms: 80 + -80 = 0
0 + 10x = 90 + -80
10x = 90 + -80

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

Divide each side by '10'.
x = 1

Simplifying
x = 1

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