11-4(a+20)=8+a

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Solution for 11-4(a+20)=8+a equation:


Simplifying
11 + -4(a + 20) = 8 + a

Reorder the terms:
11 + -4(20 + a) = 8 + a
11 + (20 * -4 + a * -4) = 8 + a
11 + (-80 + -4a) = 8 + a

Combine like terms: 11 + -80 = -69
-69 + -4a = 8 + a

Solving
-69 + -4a = 8 + a

Solving for variable 'a'.

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

Add '-1a' to each side of the equation.
-69 + -4a + -1a = 8 + a + -1a

Combine like terms: -4a + -1a = -5a
-69 + -5a = 8 + a + -1a

Combine like terms: a + -1a = 0
-69 + -5a = 8 + 0
-69 + -5a = 8

Add '69' to each side of the equation.
-69 + 69 + -5a = 8 + 69

Combine like terms: -69 + 69 = 0
0 + -5a = 8 + 69
-5a = 8 + 69

Combine like terms: 8 + 69 = 77
-5a = 77

Divide each side by '-5'.
a = -15.4

Simplifying
a = -15.4

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