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

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


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

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

Combine like terms: 7 + 3 = 10
10 + -3a = 2 + 9

Combine like terms: 2 + 9 = 11
10 + -3a = 11

Solving
10 + -3a = 11

Solving for variable 'a'.

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

Add '-10' to each side of the equation.
10 + -10 + -3a = 11 + -10

Combine like terms: 10 + -10 = 0
0 + -3a = 11 + -10
-3a = 11 + -10

Combine like terms: 11 + -10 = 1
-3a = 1

Divide each side by '-3'.
a = -0.3333333333

Simplifying
a = -0.3333333333

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