3(9-6)=6a-(3a+18)

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Solution for 3(9-6)=6a-(3a+18) equation:


Simplifying
3(9 + -6) = 6a + -1(3a + 18)

Combine like terms: 9 + -6 = 3
3(3) = 6a + -1(3a + 18)

Multiply 3 * 3
9 = 6a + -1(3a + 18)

Reorder the terms:
9 = 6a + -1(18 + 3a)
9 = 6a + (18 * -1 + 3a * -1)
9 = 6a + (-18 + -3a)

Reorder the terms:
9 = -18 + 6a + -3a

Combine like terms: 6a + -3a = 3a
9 = -18 + 3a

Solving
9 = -18 + 3a

Solving for variable 'a'.

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

Add '-3a' to each side of the equation.
9 + -3a = -18 + 3a + -3a

Combine like terms: 3a + -3a = 0
9 + -3a = -18 + 0
9 + -3a = -18

Add '-9' to each side of the equation.
9 + -9 + -3a = -18 + -9

Combine like terms: 9 + -9 = 0
0 + -3a = -18 + -9
-3a = -18 + -9

Combine like terms: -18 + -9 = -27
-3a = -27

Divide each side by '-3'.
a = 9

Simplifying
a = 9

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