8a-9=7a-10

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Solution for 8a-9=7a-10 equation:


Simplifying
8a + -9 = 7a + -10

Reorder the terms:
-9 + 8a = 7a + -10

Reorder the terms:
-9 + 8a = -10 + 7a

Solving
-9 + 8a = -10 + 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.
-9 + 8a + -7a = -10 + 7a + -7a

Combine like terms: 8a + -7a = 1a
-9 + 1a = -10 + 7a + -7a

Combine like terms: 7a + -7a = 0
-9 + 1a = -10 + 0
-9 + 1a = -10

Add '9' to each side of the equation.
-9 + 9 + 1a = -10 + 9

Combine like terms: -9 + 9 = 0
0 + 1a = -10 + 9
1a = -10 + 9

Combine like terms: -10 + 9 = -1
1a = -1

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

Simplifying
a = -1

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