4=-4(4a-9)

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Solution for 4=-4(4a-9) equation:


Simplifying
4 = -4(4a + -9)

Reorder the terms:
4 = -4(-9 + 4a)
4 = (-9 * -4 + 4a * -4)
4 = (36 + -16a)

Solving
4 = 36 + -16a

Solving for variable 'a'.

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

Add '16a' to each side of the equation.
4 + 16a = 36 + -16a + 16a

Combine like terms: -16a + 16a = 0
4 + 16a = 36 + 0
4 + 16a = 36

Add '-4' to each side of the equation.
4 + -4 + 16a = 36 + -4

Combine like terms: 4 + -4 = 0
0 + 16a = 36 + -4
16a = 36 + -4

Combine like terms: 36 + -4 = 32
16a = 32

Divide each side by '16'.
a = 2

Simplifying
a = 2

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