4a+20=a+25

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Solution for 4a+20=a+25 equation: 


Simplifying
4a + 20 = a + 25

Reorder the terms:
20 + 4a = a + 25

Reorder the terms:
20 + 4a = 25 + a

Solving
20 + 4a = 25 + 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.
20 + 4a + -1a = 25 + a + -1a

Combine like terms: 4a + -1a = 3a
20 + 3a = 25 + a + -1a

Combine like terms: a + -1a = 0
20 + 3a = 25 + 0
20 + 3a = 25

Add '-20' to each side of the equation.
20 + -20 + 3a = 25 + -20

Combine like terms: 20 + -20 = 0
0 + 3a = 25 + -20
3a = 25 + -20

Combine like terms: 25 + -20 = 5
3a = 5

Divide each side by '3'.
a = 1.666666667

Simplifying
a = 1.666666667

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