20x-4-3x=7x-21-9

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Solution for 20x-4-3x=7x-21-9 equation:


Simplifying
20x + -4 + -3x = 7x + -21 + -9

Reorder the terms:
-4 + 20x + -3x = 7x + -21 + -9

Combine like terms: 20x + -3x = 17x
-4 + 17x = 7x + -21 + -9

Reorder the terms:
-4 + 17x = -21 + -9 + 7x

Combine like terms: -21 + -9 = -30
-4 + 17x = -30 + 7x

Solving
-4 + 17x = -30 + 7x

Solving for variable 'x'.

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

Add '-7x' to each side of the equation.
-4 + 17x + -7x = -30 + 7x + -7x

Combine like terms: 17x + -7x = 10x
-4 + 10x = -30 + 7x + -7x

Combine like terms: 7x + -7x = 0
-4 + 10x = -30 + 0
-4 + 10x = -30

Add '4' to each side of the equation.
-4 + 4 + 10x = -30 + 4

Combine like terms: -4 + 4 = 0
0 + 10x = -30 + 4
10x = -30 + 4

Combine like terms: -30 + 4 = -26
10x = -26

Divide each side by '10'.
x = -2.6

Simplifying
x = -2.6

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