4a+5a+3=84

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Solution for 4a+5a+3=84 equation: 


Simplifying
4a + 5a + 3 = 84

Reorder the terms:
3 + 4a + 5a = 84

Combine like terms: 4a + 5a = 9a
3 + 9a = 84

Solving
3 + 9a = 84

Solving for variable 'a'.

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

Add '-3' to each side of the equation.
3 + -3 + 9a = 84 + -3

Combine like terms: 3 + -3 = 0
0 + 9a = 84 + -3
9a = 84 + -3

Combine like terms: 84 + -3 = 81
9a = 81

Divide each side by '9'.
a = 9

Simplifying
a = 9

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