4a+20=-a+25

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


Simplifying
4a + 20 = -1a + 25

Reorder the terms:
20 + 4a = -1a + 25

Reorder the terms:
20 + 4a = 25 + -1a

Solving
20 + 4a = 25 + -1a

Solving for variable 'a'.

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

Add 'a' to each side of the equation.
20 + 4a + a = 25 + -1a + a

Combine like terms: 4a + a = 5a
20 + 5a = 25 + -1a + a

Combine like terms: -1a + a = 0
20 + 5a = 25 + 0
20 + 5a = 25

Add '-20' to each side of the equation.
20 + -20 + 5a = 25 + -20

Combine like terms: 20 + -20 = 0
0 + 5a = 25 + -20
5a = 25 + -20

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

Divide each side by '5'.
a = 1

Simplifying
a = 1

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