3a+7a-15=6a-a-80

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Solution for 3a+7a-15=6a-a-80 equation:


Simplifying
3a + 7a + -15 = 6a + -1a + -80

Reorder the terms:
-15 + 3a + 7a = 6a + -1a + -80

Combine like terms: 3a + 7a = 10a
-15 + 10a = 6a + -1a + -80

Reorder the terms:
-15 + 10a = -80 + 6a + -1a

Combine like terms: 6a + -1a = 5a
-15 + 10a = -80 + 5a

Solving
-15 + 10a = -80 + 5a

Solving for variable 'a'.

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

Add '-5a' to each side of the equation.
-15 + 10a + -5a = -80 + 5a + -5a

Combine like terms: 10a + -5a = 5a
-15 + 5a = -80 + 5a + -5a

Combine like terms: 5a + -5a = 0
-15 + 5a = -80 + 0
-15 + 5a = -80

Add '15' to each side of the equation.
-15 + 15 + 5a = -80 + 15

Combine like terms: -15 + 15 = 0
0 + 5a = -80 + 15
5a = -80 + 15

Combine like terms: -80 + 15 = -65
5a = -65

Divide each side by '5'.
a = -13

Simplifying
a = -13

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