5a+8-4=-21

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Solution for 5a+8-4=-21 equation:


Simplifying
5a + 8 + -4 = -21

Reorder the terms:
8 + -4 + 5a = -21

Combine like terms: 8 + -4 = 4
4 + 5a = -21

Solving
4 + 5a = -21

Solving for variable 'a'.

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

Add '-4' to each side of the equation.
4 + -4 + 5a = -21 + -4

Combine like terms: 4 + -4 = 0
0 + 5a = -21 + -4
5a = -21 + -4

Combine like terms: -21 + -4 = -25
5a = -25

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

Simplifying
a = -5

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