30x+90=30(30-20x)+90

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Solution for 30x+90=30(30-20x)+90 equation: 


Simplifying
30x + 90 = 30(30 + -20x) + 90

Reorder the terms:
90 + 30x = 30(30 + -20x) + 90
90 + 30x = (30 * 30 + -20x * 30) + 90
90 + 30x = (900 + -600x) + 90

Reorder the terms:
90 + 30x = 900 + 90 + -600x

Combine like terms: 900 + 90 = 990
90 + 30x = 990 + -600x

Solving
90 + 30x = 990 + -600x

Solving for variable 'x'.

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

Add '600x' to each side of the equation.
90 + 30x + 600x = 990 + -600x + 600x

Combine like terms: 30x + 600x = 630x
90 + 630x = 990 + -600x + 600x

Combine like terms: -600x + 600x = 0
90 + 630x = 990 + 0
90 + 630x = 990

Add '-90' to each side of the equation.
90 + -90 + 630x = 990 + -90

Combine like terms: 90 + -90 = 0
0 + 630x = 990 + -90
630x = 990 + -90

Combine like terms: 990 + -90 = 900
630x = 900

Divide each side by '630'.
x = 1.428571429

Simplifying
x = 1.428571429

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