3x-7-5x=6x+21

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Solution for 3x-7-5x=6x+21 equation:


Simplifying
3x + -7 + -5x = 6x + 21

Reorder the terms:
-7 + 3x + -5x = 6x + 21

Combine like terms: 3x + -5x = -2x
-7 + -2x = 6x + 21

Reorder the terms:
-7 + -2x = 21 + 6x

Solving
-7 + -2x = 21 + 6x

Solving for variable 'x'.

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

Add '-6x' to each side of the equation.
-7 + -2x + -6x = 21 + 6x + -6x

Combine like terms: -2x + -6x = -8x
-7 + -8x = 21 + 6x + -6x

Combine like terms: 6x + -6x = 0
-7 + -8x = 21 + 0
-7 + -8x = 21

Add '7' to each side of the equation.
-7 + 7 + -8x = 21 + 7

Combine like terms: -7 + 7 = 0
0 + -8x = 21 + 7
-8x = 21 + 7

Combine like terms: 21 + 7 = 28
-8x = 28

Divide each side by '-8'.
x = -3.5

Simplifying
x = -3.5

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