7a+5a+13-7=7a+9+3a

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Solution for 7a+5a+13-7=7a+9+3a equation:


Simplifying
7a + 5a + 13 + -7 = 7a + 9 + 3a

Reorder the terms:
13 + -7 + 7a + 5a = 7a + 9 + 3a

Combine like terms: 13 + -7 = 6
6 + 7a + 5a = 7a + 9 + 3a

Combine like terms: 7a + 5a = 12a
6 + 12a = 7a + 9 + 3a

Reorder the terms:
6 + 12a = 9 + 7a + 3a

Combine like terms: 7a + 3a = 10a
6 + 12a = 9 + 10a

Solving
6 + 12a = 9 + 10a

Solving for variable 'a'.

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

Add '-10a' to each side of the equation.
6 + 12a + -10a = 9 + 10a + -10a

Combine like terms: 12a + -10a = 2a
6 + 2a = 9 + 10a + -10a

Combine like terms: 10a + -10a = 0
6 + 2a = 9 + 0
6 + 2a = 9

Add '-6' to each side of the equation.
6 + -6 + 2a = 9 + -6

Combine like terms: 6 + -6 = 0
0 + 2a = 9 + -6
2a = 9 + -6

Combine like terms: 9 + -6 = 3
2a = 3

Divide each side by '2'.
a = 1.5

Simplifying
a = 1.5

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