12a+a-10a-a+1=15

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Solution for 12a+a-10a-a+1=15 equation:


Simplifying
12a + a + -10a + -1a + 1 = 15

Reorder the terms:
1 + 12a + a + -10a + -1a = 15

Combine like terms: 12a + a = 13a
1 + 13a + -10a + -1a = 15

Combine like terms: 13a + -10a = 3a
1 + 3a + -1a = 15

Combine like terms: 3a + -1a = 2a
1 + 2a = 15

Solving
1 + 2a = 15

Solving for variable 'a'.

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

Add '-1' to each side of the equation.
1 + -1 + 2a = 15 + -1

Combine like terms: 1 + -1 = 0
0 + 2a = 15 + -1
2a = 15 + -1

Combine like terms: 15 + -1 = 14
2a = 14

Divide each side by '2'.
a = 7

Simplifying
a = 7

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