80+6a=2(10a-9)

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Solution for 80+6a=2(10a-9) equation:


Simplifying
80 + 6a = 2(10a + -9)

Reorder the terms:
80 + 6a = 2(-9 + 10a)
80 + 6a = (-9 * 2 + 10a * 2)
80 + 6a = (-18 + 20a)

Solving
80 + 6a = -18 + 20a

Solving for variable 'a'.

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

Add '-20a' to each side of the equation.
80 + 6a + -20a = -18 + 20a + -20a

Combine like terms: 6a + -20a = -14a
80 + -14a = -18 + 20a + -20a

Combine like terms: 20a + -20a = 0
80 + -14a = -18 + 0
80 + -14a = -18

Add '-80' to each side of the equation.
80 + -80 + -14a = -18 + -80

Combine like terms: 80 + -80 = 0
0 + -14a = -18 + -80
-14a = -18 + -80

Combine like terms: -18 + -80 = -98
-14a = -98

Divide each side by '-14'.
a = 7

Simplifying
a = 7

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