20-2a=7a+2

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Solution for 20-2a=7a+2 equation:


Simplifying
20 + -2a = 7a + 2

Reorder the terms:
20 + -2a = 2 + 7a

Solving
20 + -2a = 2 + 7a

Solving for variable 'a'.

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

Add '-7a' to each side of the equation.
20 + -2a + -7a = 2 + 7a + -7a

Combine like terms: -2a + -7a = -9a
20 + -9a = 2 + 7a + -7a

Combine like terms: 7a + -7a = 0
20 + -9a = 2 + 0
20 + -9a = 2

Add '-20' to each side of the equation.
20 + -20 + -9a = 2 + -20

Combine like terms: 20 + -20 = 0
0 + -9a = 2 + -20
-9a = 2 + -20

Combine like terms: 2 + -20 = -18
-9a = -18

Divide each side by '-9'.
a = 2

Simplifying
a = 2

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