8x+28+5x=21

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Solution for 8x+28+5x=21 equation:


Simplifying
8x + 28 + 5x = 21

Reorder the terms:
28 + 8x + 5x = 21

Combine like terms: 8x + 5x = 13x
28 + 13x = 21

Solving
28 + 13x = 21

Solving for variable 'x'.

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

Add '-28' to each side of the equation.
28 + -28 + 13x = 21 + -28

Combine like terms: 28 + -28 = 0
0 + 13x = 21 + -28
13x = 21 + -28

Combine like terms: 21 + -28 = -7
13x = -7

Divide each side by '13'.
x = -0.5384615385

Simplifying
x = -0.5384615385

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