7x-x-1=4-7x+21

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Solution for 7x-x-1=4-7x+21 equation:


Simplifying
7x + -1x + -1 = 4 + -7x + 21

Reorder the terms:
-1 + 7x + -1x = 4 + -7x + 21

Combine like terms: 7x + -1x = 6x
-1 + 6x = 4 + -7x + 21

Reorder the terms:
-1 + 6x = 4 + 21 + -7x

Combine like terms: 4 + 21 = 25
-1 + 6x = 25 + -7x

Solving
-1 + 6x = 25 + -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.
-1 + 6x + 7x = 25 + -7x + 7x

Combine like terms: 6x + 7x = 13x
-1 + 13x = 25 + -7x + 7x

Combine like terms: -7x + 7x = 0
-1 + 13x = 25 + 0
-1 + 13x = 25

Add '1' to each side of the equation.
-1 + 1 + 13x = 25 + 1

Combine like terms: -1 + 1 = 0
0 + 13x = 25 + 1
13x = 25 + 1

Combine like terms: 25 + 1 = 26
13x = 26

Divide each side by '13'.
x = 2

Simplifying
x = 2

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