-3=.5a-4

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Solution for -3=.5a-4 equation:


Simplifying
-3 = 0.5a + -4

Reorder the terms:
-3 = -4 + 0.5a

Solving
-3 = -4 + 0.5a

Solving for variable 'a'.

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

Add '-0.5a' to each side of the equation.
-3 + -0.5a = -4 + 0.5a + -0.5a

Combine like terms: 0.5a + -0.5a = 0.0
-3 + -0.5a = -4 + 0.0
-3 + -0.5a = -4

Add '3' to each side of the equation.
-3 + 3 + -0.5a = -4 + 3

Combine like terms: -3 + 3 = 0
0 + -0.5a = -4 + 3
-0.5a = -4 + 3

Combine like terms: -4 + 3 = -1
-0.5a = -1

Divide each side by '-0.5'.
a = 2

Simplifying
a = 2

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