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

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


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

Combine like terms: 4 + -5 = -1
-21 + -8a = -1 + 6(-1)

Multiply 6 * -1
-21 + -8a = -1 + -6

Combine like terms: -1 + -6 = -7
-21 + -8a = -7

Solving
-21 + -8a = -7

Solving for variable 'a'.

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

Add '21' to each side of the equation.
-21 + 21 + -8a = -7 + 21

Combine like terms: -21 + 21 = 0
0 + -8a = -7 + 21
-8a = -7 + 21

Combine like terms: -7 + 21 = 14
-8a = 14

Divide each side by '-8'.
a = -1.75

Simplifying
a = -1.75

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