3-(2a+5)=-12

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Solution for 3-(2a+5)=-12 equation:


Simplifying
3 + -1(2a + 5) = -12

Reorder the terms:
3 + -1(5 + 2a) = -12
3 + (5 * -1 + 2a * -1) = -12
3 + (-5 + -2a) = -12

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

Solving
-2 + -2a = -12

Solving for variable 'a'.

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

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

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

Combine like terms: -12 + 2 = -10
-2a = -10

Divide each side by '-2'.
a = 5

Simplifying
a = 5

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