-5a+28+8a=3a-7a

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Solution for -5a+28+8a=3a-7a equation:


Simplifying
-5a + 28 + 8a = 3a + -7a

Reorder the terms:
28 + -5a + 8a = 3a + -7a

Combine like terms: -5a + 8a = 3a
28 + 3a = 3a + -7a

Combine like terms: 3a + -7a = -4a
28 + 3a = -4a

Solving
28 + 3a = -4a

Solving for variable 'a'.

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

Add '4a' to each side of the equation.
28 + 3a + 4a = -4a + 4a

Combine like terms: 3a + 4a = 7a
28 + 7a = -4a + 4a

Combine like terms: -4a + 4a = 0
28 + 7a = 0

Add '-28' to each side of the equation.
28 + -28 + 7a = 0 + -28

Combine like terms: 28 + -28 = 0
0 + 7a = 0 + -28
7a = 0 + -28

Combine like terms: 0 + -28 = -28
7a = -28

Divide each side by '7'.
a = -4

Simplifying
a = -4

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