2a-7=9a

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Solution for 2a-7=9a equation:


Simplifying
2a + -7 = 9a

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

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

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

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

Add '7' to each side of the equation.
-7 + 7 + -7a = 0 + 7

Combine like terms: -7 + 7 = 0
0 + -7a = 0 + 7
-7a = 0 + 7

Combine like terms: 0 + 7 = 7
-7a = 7

Divide each side by '-7'.
a = -1

Simplifying
a = -1

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