-84=-4(1-5a)

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Solution for -84=-4(1-5a) equation:


Simplifying
-84 = -4(1 + -5a)
-84 = (1 * -4 + -5a * -4)
-84 = (-4 + 20a)

Solving
-84 = -4 + 20a

Solving for variable 'a'.

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

Add '-20a' to each side of the equation.
-84 + -20a = -4 + 20a + -20a

Combine like terms: 20a + -20a = 0
-84 + -20a = -4 + 0
-84 + -20a = -4

Add '84' to each side of the equation.
-84 + 84 + -20a = -4 + 84

Combine like terms: -84 + 84 = 0
0 + -20a = -4 + 84
-20a = -4 + 84

Combine like terms: -4 + 84 = 80
-20a = 80

Divide each side by '-20'.
a = -4

Simplifying
a = -4

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