2x+9=8+21

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Solution for 2x+9=8+21 equation: 


Simplifying
2x + 9 = 8 + 21

Reorder the terms:
9 + 2x = 8 + 21

Combine like terms: 8 + 21 = 29
9 + 2x = 29

Solving
9 + 2x = 29

Solving for variable 'x'.

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

Add '-9' to each side of the equation.
9 + -9 + 2x = 29 + -9

Combine like terms: 9 + -9 = 0
0 + 2x = 29 + -9
2x = 29 + -9

Combine like terms: 29 + -9 = 20
2x = 20

Divide each side by '2'.
x = 10

Simplifying
x = 10

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