4a+5a=3(1-2a)+6(3a+3)

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Solution for 4a+5a=3(1-2a)+6(3a+3) equation:


Simplifying
4a + 5a = 3(1 + -2a) + 6(3a + 3)

Combine like terms: 4a + 5a = 9a
9a = 3(1 + -2a) + 6(3a + 3)
9a = (1 * 3 + -2a * 3) + 6(3a + 3)
9a = (3 + -6a) + 6(3a + 3)

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

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

Combine like terms: 3 + 18 = 21
9a = 21 + -6a + 18a

Combine like terms: -6a + 18a = 12a
9a = 21 + 12a

Solving
9a = 21 + 12a

Solving for variable 'a'.

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

Add '-12a' to each side of the equation.
9a + -12a = 21 + 12a + -12a

Combine like terms: 9a + -12a = -3a
-3a = 21 + 12a + -12a

Combine like terms: 12a + -12a = 0
-3a = 21 + 0
-3a = 21

Divide each side by '-3'.
a = -7

Simplifying
a = -7

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