8a-1=4a-9

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Solution for 8a-1=4a-9 equation:


Simplifying
8a + -1 = 4a + -9

Reorder the terms:
-1 + 8a = 4a + -9

Reorder the terms:
-1 + 8a = -9 + 4a

Solving
-1 + 8a = -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.
-1 + 8a + -4a = -9 + 4a + -4a

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

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

Add '1' to each side of the equation.
-1 + 1 + 4a = -9 + 1

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

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

Divide each side by '4'.
a = -2

Simplifying
a = -2

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