3a+2a-1=8

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Solution for 3a+2a-1=8 equation: 


Simplifying
3a + 2a + -1 = 8

Reorder the terms:
-1 + 3a + 2a = 8

Combine like terms: 3a + 2a = 5a
-1 + 5a = 8

Solving
-1 + 5a = 8

Solving for variable 'a'.

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

Add '1' to each side of the equation.
-1 + 1 + 5a = 8 + 1

Combine like terms: -1 + 1 = 0
0 + 5a = 8 + 1
5a = 8 + 1

Combine like terms: 8 + 1 = 9
5a = 9

Divide each side by '5'.
a = 1.8

Simplifying
a = 1.8

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