19a+0.25(-12-4a)=-57

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Solution for 19a+0.25(-12-4a)=-57 equation:


Simplifying
19a + 0.25(-12 + -4a) = -57
19a + (-12 * 0.25 + -4a * 0.25) = -57
19a + (-3 + -1a) = -57

Reorder the terms:
-3 + 19a + -1a = -57

Combine like terms: 19a + -1a = 18a
-3 + 18a = -57

Solving
-3 + 18a = -57

Solving for variable 'a'.

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

Add '3' to each side of the equation.
-3 + 3 + 18a = -57 + 3

Combine like terms: -3 + 3 = 0
0 + 18a = -57 + 3
18a = -57 + 3

Combine like terms: -57 + 3 = -54
18a = -54

Divide each side by '18'.
a = -3

Simplifying
a = -3

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