=6a-(2a-9)+7

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Solution for =6a-(2a-9)+7 equation:


Simplifying
0 = 6a + -1(2a + -9) + 7

Reorder the terms:
0 = 6a + -1(-9 + 2a) + 7
0 = 6a + (-9 * -1 + 2a * -1) + 7
0 = 6a + (9 + -2a) + 7

Reorder the terms:
0 = 9 + 7 + 6a + -2a

Combine like terms: 9 + 7 = 16
0 = 16 + 6a + -2a

Combine like terms: 6a + -2a = 4a
0 = 16 + 4a

Solving
0 = 16 + 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.
0 + -4a = 16 + 4a + -4a
Remove the zero:
-4a = 16 + 4a + -4a

Combine like terms: 4a + -4a = 0
-4a = 16 + 0
-4a = 16

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

Simplifying
a = -4

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