7a-2(3a+1)-9=

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Solution for 7a-2(3a+1)-9= equation:


Simplifying
7a + -2(3a + 1) + -9 = 0

Reorder the terms:
7a + -2(1 + 3a) + -9 = 0
7a + (1 * -2 + 3a * -2) + -9 = 0
7a + (-2 + -6a) + -9 = 0

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

Combine like terms: -2 + -9 = -11
-11 + 7a + -6a = 0

Combine like terms: 7a + -6a = 1a
-11 + 1a = 0

Solving
-11 + 1a = 0

Solving for variable 'a'.

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

Add '11' to each side of the equation.
-11 + 11 + 1a = 0 + 11

Combine like terms: -11 + 11 = 0
0 + 1a = 0 + 11
1a = 0 + 11

Combine like terms: 0 + 11 = 11
1a = 11

Divide each side by '1'.
a = 11

Simplifying
a = 11

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