7a-2=9-a

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Solution for 7a-2=9-a equation:


Simplifying
7a + -2 = 9 + -1a

Reorder the terms:
-2 + 7a = 9 + -1a

Solving
-2 + 7a = 9 + -1a

Solving for variable 'a'.

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

Add 'a' to each side of the equation.
-2 + 7a + a = 9 + -1a + a

Combine like terms: 7a + a = 8a
-2 + 8a = 9 + -1a + a

Combine like terms: -1a + a = 0
-2 + 8a = 9 + 0
-2 + 8a = 9

Add '2' to each side of the equation.
-2 + 2 + 8a = 9 + 2

Combine like terms: -2 + 2 = 0
0 + 8a = 9 + 2
8a = 9 + 2

Combine like terms: 9 + 2 = 11
8a = 11

Divide each side by '8'.
a = 1.375

Simplifying
a = 1.375

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