3a+4a+5=75

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Solution for 3a+4a+5=75 equation: 


Simplifying
3a + 4a + 5 = 75

Reorder the terms:
5 + 3a + 4a = 75

Combine like terms: 3a + 4a = 7a
5 + 7a = 75

Solving
5 + 7a = 75

Solving for variable 'a'.

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

Add '-5' to each side of the equation.
5 + -5 + 7a = 75 + -5

Combine like terms: 5 + -5 = 0
0 + 7a = 75 + -5
7a = 75 + -5

Combine like terms: 75 + -5 = 70
7a = 70

Divide each side by '7'.
a = 10

Simplifying
a = 10

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