-21-8a=-1+6(4-5a)

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Solution for -21-8a=-1+6(4-5a) equation:


Simplifying
-21 + -8a = -1 + 6(4 + -5a)
-21 + -8a = -1 + (4 * 6 + -5a * 6)
-21 + -8a = -1 + (24 + -30a)

Combine like terms: -1 + 24 = 23
-21 + -8a = 23 + -30a

Solving
-21 + -8a = 23 + -30a

Solving for variable 'a'.

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

Add '30a' to each side of the equation.
-21 + -8a + 30a = 23 + -30a + 30a

Combine like terms: -8a + 30a = 22a
-21 + 22a = 23 + -30a + 30a

Combine like terms: -30a + 30a = 0
-21 + 22a = 23 + 0
-21 + 22a = 23

Add '21' to each side of the equation.
-21 + 21 + 22a = 23 + 21

Combine like terms: -21 + 21 = 0
0 + 22a = 23 + 21
22a = 23 + 21

Combine like terms: 23 + 21 = 44
22a = 44

Divide each side by '22'.
a = 2

Simplifying
a = 2

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