21x+8-23x=7-9

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Solution for 21x+8-23x=7-9 equation:


Simplifying
21x + 8 + -23x = 7 + -9

Reorder the terms:
8 + 21x + -23x = 7 + -9

Combine like terms: 21x + -23x = -2x
8 + -2x = 7 + -9

Combine like terms: 7 + -9 = -2
8 + -2x = -2

Solving
8 + -2x = -2

Solving for variable 'x'.

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

Add '-8' to each side of the equation.
8 + -8 + -2x = -2 + -8

Combine like terms: 8 + -8 = 0
0 + -2x = -2 + -8
-2x = -2 + -8

Combine like terms: -2 + -8 = -10
-2x = -10

Divide each side by '-2'.
x = 5

Simplifying
x = 5

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