1x-4x-7=5x-1x+21

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Solution for 1x-4x-7=5x-1x+21 equation:


Simplifying
1x + -4x + -7 = 5x + -1x + 21

Reorder the terms:
-7 + 1x + -4x = 5x + -1x + 21

Combine like terms: 1x + -4x = -3x
-7 + -3x = 5x + -1x + 21

Reorder the terms:
-7 + -3x = 21 + 5x + -1x

Combine like terms: 5x + -1x = 4x
-7 + -3x = 21 + 4x

Solving
-7 + -3x = 21 + 4x

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
-7 + -3x + -4x = 21 + 4x + -4x

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

Combine like terms: 4x + -4x = 0
-7 + -7x = 21 + 0
-7 + -7x = 21

Add '7' to each side of the equation.
-7 + 7 + -7x = 21 + 7

Combine like terms: -7 + 7 = 0
0 + -7x = 21 + 7
-7x = 21 + 7

Combine like terms: 21 + 7 = 28
-7x = 28

Divide each side by '-7'.
x = -4

Simplifying
x = -4

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