3a+7a+5=15

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Solution for 3a+7a+5=15 equation: 


Simplifying
3a + 7a + 5 = 15

Reorder the terms:
5 + 3a + 7a = 15

Combine like terms: 3a + 7a = 10a
5 + 10a = 15

Solving
5 + 10a = 15

Solving for variable 'a'.

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

Add '-5' to each side of the equation.
5 + -5 + 10a = 15 + -5

Combine like terms: 5 + -5 = 0
0 + 10a = 15 + -5
10a = 15 + -5

Combine like terms: 15 + -5 = 10
10a = 10

Divide each side by '10'.
a = 1

Simplifying
a = 1

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