3a+10+a=90

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Solution for 3a+10+a=90 equation:


Simplifying
3a + 10 + a = 90

Reorder the terms:
10 + 3a + a = 90

Combine like terms: 3a + a = 4a
10 + 4a = 90

Solving
10 + 4a = 90

Solving for variable 'a'.

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

Add '-10' to each side of the equation.
10 + -10 + 4a = 90 + -10

Combine like terms: 10 + -10 = 0
0 + 4a = 90 + -10
4a = 90 + -10

Combine like terms: 90 + -10 = 80
4a = 80

Divide each side by '4'.
a = 20

Simplifying
a = 20

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