8x+5x-21=105-8x

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Solution for 8x+5x-21=105-8x equation:


Simplifying
8x + 5x + -21 = 105 + -8x

Reorder the terms:
-21 + 8x + 5x = 105 + -8x

Combine like terms: 8x + 5x = 13x
-21 + 13x = 105 + -8x

Solving
-21 + 13x = 105 + -8x

Solving for variable 'x'.

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

Add '8x' to each side of the equation.
-21 + 13x + 8x = 105 + -8x + 8x

Combine like terms: 13x + 8x = 21x
-21 + 21x = 105 + -8x + 8x

Combine like terms: -8x + 8x = 0
-21 + 21x = 105 + 0
-21 + 21x = 105

Add '21' to each side of the equation.
-21 + 21 + 21x = 105 + 21

Combine like terms: -21 + 21 = 0
0 + 21x = 105 + 21
21x = 105 + 21

Combine like terms: 105 + 21 = 126
21x = 126

Divide each side by '21'.
x = 6

Simplifying
x = 6

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