4a+5=a+20

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Solution for 4a+5=a+20 equation:


Simplifying
4a + 5 = a + 20

Reorder the terms:
5 + 4a = a + 20

Reorder the terms:
5 + 4a = 20 + a

Solving
5 + 4a = 20 + a

Solving for variable 'a'.

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

Add '-1a' to each side of the equation.
5 + 4a + -1a = 20 + a + -1a

Combine like terms: 4a + -1a = 3a
5 + 3a = 20 + a + -1a

Combine like terms: a + -1a = 0
5 + 3a = 20 + 0
5 + 3a = 20

Add '-5' to each side of the equation.
5 + -5 + 3a = 20 + -5

Combine like terms: 5 + -5 = 0
0 + 3a = 20 + -5
3a = 20 + -5

Combine like terms: 20 + -5 = 15
3a = 15

Divide each side by '3'.
a = 5

Simplifying
a = 5

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