3[4-2(9-2)]=3(2-4a)

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Solution for 3[4-2(9-2)]=3(2-4a) equation:


Simplifying
3[4 + -2(9 + -2)] = 3(2 + -4a)

Combine like terms: 9 + -2 = 7
3[4 + -2(7)] = 3(2 + -4a)

Multiply -2 * 7
3[4 + -14] = 3(2 + -4a)

Combine like terms: 4 + -14 = -10
3[-10] = 3(2 + -4a)

Multiply 3 * -10
-30 = 3(2 + -4a)
-30 = (2 * 3 + -4a * 3)
-30 = (6 + -12a)

Solving
-30 = 6 + -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.
-30 + 12a = 6 + -12a + 12a

Combine like terms: -12a + 12a = 0
-30 + 12a = 6 + 0
-30 + 12a = 6

Add '30' to each side of the equation.
-30 + 30 + 12a = 6 + 30

Combine like terms: -30 + 30 = 0
0 + 12a = 6 + 30
12a = 6 + 30

Combine like terms: 6 + 30 = 36
12a = 36

Divide each side by '12'.
a = 3

Simplifying
a = 3

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