-25-a=20+2a

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Solution for -25-a=20+2a equation:


Simplifying
-25 + -1a = 20 + 2a

Solving
-25 + -1a = 20 + 2a

Solving for variable 'a'.

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

Add '-2a' to each side of the equation.
-25 + -1a + -2a = 20 + 2a + -2a

Combine like terms: -1a + -2a = -3a
-25 + -3a = 20 + 2a + -2a

Combine like terms: 2a + -2a = 0
-25 + -3a = 20 + 0
-25 + -3a = 20

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

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

Combine like terms: 20 + 25 = 45
-3a = 45

Divide each side by '-3'.
a = -15

Simplifying
a = -15

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