.5a+4=a-15

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Solution for .5a+4=a-15 equation:


Simplifying
0.5a + 4 = a + -15

Reorder the terms:
4 + 0.5a = a + -15

Reorder the terms:
4 + 0.5a = -15 + a

Solving
4 + 0.5a = -15 + a

Solving for variable 'a'.

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

Add '-1a' to each side of the equation.
4 + 0.5a + -1a = -15 + a + -1a

Combine like terms: 0.5a + -1a = -0.5a
4 + -0.5a = -15 + a + -1a

Combine like terms: a + -1a = 0
4 + -0.5a = -15 + 0
4 + -0.5a = -15

Add '-4' to each side of the equation.
4 + -4 + -0.5a = -15 + -4

Combine like terms: 4 + -4 = 0
0 + -0.5a = -15 + -4
-0.5a = -15 + -4

Combine like terms: -15 + -4 = -19
-0.5a = -19

Divide each side by '-0.5'.
a = 38

Simplifying
a = 38

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