3a-8=4a-9

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Solution for 3a-8=4a-9 equation:


Simplifying
3a + -8 = 4a + -9

Reorder the terms:
-8 + 3a = 4a + -9

Reorder the terms:
-8 + 3a = -9 + 4a

Solving
-8 + 3a = -9 + 4a

Solving for variable 'a'.

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

Add '-4a' to each side of the equation.
-8 + 3a + -4a = -9 + 4a + -4a

Combine like terms: 3a + -4a = -1a
-8 + -1a = -9 + 4a + -4a

Combine like terms: 4a + -4a = 0
-8 + -1a = -9 + 0
-8 + -1a = -9

Add '8' to each side of the equation.
-8 + 8 + -1a = -9 + 8

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

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

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

Simplifying
a = 1

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