3a-9a-7=-4a+5-4a

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Solution for 3a-9a-7=-4a+5-4a equation:


Simplifying
3a + -9a + -7 = -4a + 5 + -4a

Reorder the terms:
-7 + 3a + -9a = -4a + 5 + -4a

Combine like terms: 3a + -9a = -6a
-7 + -6a = -4a + 5 + -4a

Reorder the terms:
-7 + -6a = 5 + -4a + -4a

Combine like terms: -4a + -4a = -8a
-7 + -6a = 5 + -8a

Solving
-7 + -6a = 5 + -8a

Solving for variable 'a'.

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

Add '8a' to each side of the equation.
-7 + -6a + 8a = 5 + -8a + 8a

Combine like terms: -6a + 8a = 2a
-7 + 2a = 5 + -8a + 8a

Combine like terms: -8a + 8a = 0
-7 + 2a = 5 + 0
-7 + 2a = 5

Add '7' to each side of the equation.
-7 + 7 + 2a = 5 + 7

Combine like terms: -7 + 7 = 0
0 + 2a = 5 + 7
2a = 5 + 7

Combine like terms: 5 + 7 = 12
2a = 12

Divide each side by '2'.
a = 6

Simplifying
a = 6

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