9a-10=7a

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Solution for 9a-10=7a equation:


Simplifying
9a + -10 = 7a

Reorder the terms:
-10 + 9a = 7a

Solving
-10 + 9a = 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.
-10 + 9a + -7a = 7a + -7a

Combine like terms: 9a + -7a = 2a
-10 + 2a = 7a + -7a

Combine like terms: 7a + -7a = 0
-10 + 2a = 0

Add '10' to each side of the equation.
-10 + 10 + 2a = 0 + 10

Combine like terms: -10 + 10 = 0
0 + 2a = 0 + 10
2a = 0 + 10

Combine like terms: 0 + 10 = 10
2a = 10

Divide each side by '2'.
a = 5

Simplifying
a = 5

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