7x-9=20x-30

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Solution for 7x-9=20x-30 equation:


Simplifying
7x + -9 = 20x + -30

Reorder the terms:
-9 + 7x = 20x + -30

Reorder the terms:
-9 + 7x = -30 + 20x

Solving
-9 + 7x = -30 + 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.
-9 + 7x + -20x = -30 + 20x + -20x

Combine like terms: 7x + -20x = -13x
-9 + -13x = -30 + 20x + -20x

Combine like terms: 20x + -20x = 0
-9 + -13x = -30 + 0
-9 + -13x = -30

Add '9' to each side of the equation.
-9 + 9 + -13x = -30 + 9

Combine like terms: -9 + 9 = 0
0 + -13x = -30 + 9
-13x = -30 + 9

Combine like terms: -30 + 9 = -21
-13x = -21

Divide each side by '-13'.
x = 1.615384615

Simplifying
x = 1.615384615

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