8-(a-4)=3a+13

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Solution for 8-(a-4)=3a+13 equation:


Simplifying
8 + -1(a + -4) = 3a + 13

Reorder the terms:
8 + -1(-4 + a) = 3a + 13
8 + (-4 * -1 + a * -1) = 3a + 13
8 + (4 + -1a) = 3a + 13

Combine like terms: 8 + 4 = 12
12 + -1a = 3a + 13

Reorder the terms:
12 + -1a = 13 + 3a

Solving
12 + -1a = 13 + 3a

Solving for variable 'a'.

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

Add '-3a' to each side of the equation.
12 + -1a + -3a = 13 + 3a + -3a

Combine like terms: -1a + -3a = -4a
12 + -4a = 13 + 3a + -3a

Combine like terms: 3a + -3a = 0
12 + -4a = 13 + 0
12 + -4a = 13

Add '-12' to each side of the equation.
12 + -12 + -4a = 13 + -12

Combine like terms: 12 + -12 = 0
0 + -4a = 13 + -12
-4a = 13 + -12

Combine like terms: 13 + -12 = 1
-4a = 1

Divide each side by '-4'.
a = -0.25

Simplifying
a = -0.25

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