2(x+2.5)=21

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Solution for 2(x+2.5)=21 equation: 


Simplifying
2(x + 2.5) = 21

Reorder the terms:
2(2.5 + x) = 21
(2.5 * 2 + x * 2) = 21
(5 + 2x) = 21

Solving
5 + 2x = 21

Solving for variable 'x'.

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

Add '-5' to each side of the equation.
5 + -5 + 2x = 21 + -5

Combine like terms: 5 + -5 = 0
0 + 2x = 21 + -5
2x = 21 + -5

Combine like terms: 21 + -5 = 16
2x = 16

Divide each side by '2'.
x = 8

Simplifying
x = 8

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