5a-7+4a=2a-28+4a

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Solution for 5a-7+4a=2a-28+4a equation:


Simplifying
5a + -7 + 4a = 2a + -28 + 4a

Reorder the terms:
-7 + 5a + 4a = 2a + -28 + 4a

Combine like terms: 5a + 4a = 9a
-7 + 9a = 2a + -28 + 4a

Reorder the terms:
-7 + 9a = -28 + 2a + 4a

Combine like terms: 2a + 4a = 6a
-7 + 9a = -28 + 6a

Solving
-7 + 9a = -28 + 6a

Solving for variable 'a'.

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

Add '-6a' to each side of the equation.
-7 + 9a + -6a = -28 + 6a + -6a

Combine like terms: 9a + -6a = 3a
-7 + 3a = -28 + 6a + -6a

Combine like terms: 6a + -6a = 0
-7 + 3a = -28 + 0
-7 + 3a = -28

Add '7' to each side of the equation.
-7 + 7 + 3a = -28 + 7

Combine like terms: -7 + 7 = 0
0 + 3a = -28 + 7
3a = -28 + 7

Combine like terms: -28 + 7 = -21
3a = -21

Divide each side by '3'.
a = -7

Simplifying
a = -7

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