2+7a+7=20+2a

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


Simplifying
2 + 7a + 7 = 20 + 2a

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

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

Solving
9 + 7a = 20 + 2a

Solving for variable 'a'.

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

Add '-2a' to each side of the equation.
9 + 7a + -2a = 20 + 2a + -2a

Combine like terms: 7a + -2a = 5a
9 + 5a = 20 + 2a + -2a

Combine like terms: 2a + -2a = 0
9 + 5a = 20 + 0
9 + 5a = 20

Add '-9' to each side of the equation.
9 + -9 + 5a = 20 + -9

Combine like terms: 9 + -9 = 0
0 + 5a = 20 + -9
5a = 20 + -9

Combine like terms: 20 + -9 = 11
5a = 11

Divide each side by '5'.
a = 2.2

Simplifying
a = 2.2

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