-3(a+20)-2a=25

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Solution for -3(a+20)-2a=25 equation:


Simplifying
-3(a + 20) + -2a = 25

Reorder the terms:
-3(20 + a) + -2a = 25
(20 * -3 + a * -3) + -2a = 25
(-60 + -3a) + -2a = 25

Combine like terms: -3a + -2a = -5a
-60 + -5a = 25

Solving
-60 + -5a = 25

Solving for variable 'a'.

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

Add '60' to each side of the equation.
-60 + 60 + -5a = 25 + 60

Combine like terms: -60 + 60 = 0
0 + -5a = 25 + 60
-5a = 25 + 60

Combine like terms: 25 + 60 = 85
-5a = 85

Divide each side by '-5'.
a = -17

Simplifying
a = -17

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