18=-2(2a-1)

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Solution for 18=-2(2a-1) equation:


Simplifying
18 = -2(2a + -1)

Reorder the terms:
18 = -2(-1 + 2a)
18 = (-1 * -2 + 2a * -2)
18 = (2 + -4a)

Solving
18 = 2 + -4a

Solving for variable 'a'.

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

Add '4a' to each side of the equation.
18 + 4a = 2 + -4a + 4a

Combine like terms: -4a + 4a = 0
18 + 4a = 2 + 0
18 + 4a = 2

Add '-18' to each side of the equation.
18 + -18 + 4a = 2 + -18

Combine like terms: 18 + -18 = 0
0 + 4a = 2 + -18
4a = 2 + -18

Combine like terms: 2 + -18 = -16
4a = -16

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

Simplifying
a = -4

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