12-7a=3(4+a)-5a

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Solution for 12-7a=3(4+a)-5a equation:


Simplifying
12 + -7a = 3(4 + a) + -5a
12 + -7a = (4 * 3 + a * 3) + -5a
12 + -7a = (12 + 3a) + -5a

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

Add '-12' to each side of the equation.
12 + -12 + -7a = 12 + -12 + -2a

Combine like terms: 12 + -12 = 0
0 + -7a = 12 + -12 + -2a
-7a = 12 + -12 + -2a

Combine like terms: 12 + -12 = 0
-7a = 0 + -2a
-7a = -2a

Solving
-7a = -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.
-7a + 2a = -2a + 2a

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

Combine like terms: -2a + 2a = 0
-5a = 0

Divide each side by '-5'.
a = 0

Simplifying
a = 0

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