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

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


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

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

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

Combine like terms: 9a + -3a = 6a
-3 + 6a = 2(a + -2)

Reorder the terms:
-3 + 6a = 2(-2 + a)
-3 + 6a = (-2 * 2 + a * 2)
-3 + 6a = (-4 + 2a)

Solving
-3 + 6a = -4 + 2a

Solving for variable 'a'.

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

Add '-2a' to each side of the equation.
-3 + 6a + -2a = -4 + 2a + -2a

Combine like terms: 6a + -2a = 4a
-3 + 4a = -4 + 2a + -2a

Combine like terms: 2a + -2a = 0
-3 + 4a = -4 + 0
-3 + 4a = -4

Add '3' to each side of the equation.
-3 + 3 + 4a = -4 + 3

Combine like terms: -3 + 3 = 0
0 + 4a = -4 + 3
4a = -4 + 3

Combine like terms: -4 + 3 = -1
4a = -1

Divide each side by '4'.
a = -0.25

Simplifying
a = -0.25

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