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

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


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

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

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

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

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

Solving
16 + 4a = 0

Solving for variable 'a'.

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

Add '-16' to each side of the equation.
16 + -16 + 4a = 0 + -16

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

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

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

Simplifying
a = -4

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