7a-2=9a-8

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Solution for 7a-2=9a-8 equation:


Simplifying
7a + -2 = 9a + -8

Reorder the terms:
-2 + 7a = 9a + -8

Reorder the terms:
-2 + 7a = -8 + 9a

Solving
-2 + 7a = -8 + 9a

Solving for variable 'a'.

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

Add '-9a' to each side of the equation.
-2 + 7a + -9a = -8 + 9a + -9a

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

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

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

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

Combine like terms: -8 + 2 = -6
-2a = -6

Divide each side by '-2'.
a = 3

Simplifying
a = 3

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