-12-3a=-2a-5a

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Solution for -12-3a=-2a-5a equation:


Simplifying
-12 + -3a = -2a + -5a

Combine like terms: -2a + -5a = -7a
-12 + -3a = -7a

Solving
-12 + -3a = -7a

Solving for variable 'a'.

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

Add '7a' to each side of the equation.
-12 + -3a + 7a = -7a + 7a

Combine like terms: -3a + 7a = 4a
-12 + 4a = -7a + 7a

Combine like terms: -7a + 7a = 0
-12 + 4a = 0

Add '12' to each side of the equation.
-12 + 12 + 4a = 0 + 12

Combine like terms: -12 + 12 = 0
0 + 4a = 0 + 12
4a = 0 + 12

Combine like terms: 0 + 12 = 12
4a = 12

Divide each side by '4'.
a = 3

Simplifying
a = 3

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