7+2a=25

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Solution for 7+2a=25 equation: 


Simplifying
7 + 2a = 25

Solving
7 + 2a = 25

Solving for variable 'a'.

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

Add '-7' to each side of the equation.
7 + -7 + 2a = 25 + -7

Combine like terms: 7 + -7 = 0
0 + 2a = 25 + -7
2a = 25 + -7

Combine like terms: 25 + -7 = 18
2a = 18

Divide each side by '2'.
a = 9

Simplifying
a = 9

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