a-5+7=15

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Solution for a-5+7=15 equation:


Simplifying
a + -5 + 7 = 15

Reorder the terms:
-5 + 7 + a = 15

Combine like terms: -5 + 7 = 2
2 + a = 15

Solving
2 + a = 15

Solving for variable 'a'.

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

Add '-2' to each side of the equation.
2 + -2 + a = 15 + -2

Combine like terms: 2 + -2 = 0
0 + a = 15 + -2
a = 15 + -2

Combine like terms: 15 + -2 = 13
a = 13

Simplifying
a = 13

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