20=-7(3a-6)

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Solution for 20=-7(3a-6) equation:


Simplifying
20 = -7(3a + -6)

Reorder the terms:
20 = -7(-6 + 3a)
20 = (-6 * -7 + 3a * -7)
20 = (42 + -21a)

Solving
20 = 42 + -21a

Solving for variable 'a'.

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

Add '21a' to each side of the equation.
20 + 21a = 42 + -21a + 21a

Combine like terms: -21a + 21a = 0
20 + 21a = 42 + 0
20 + 21a = 42

Add '-20' to each side of the equation.
20 + -20 + 21a = 42 + -20

Combine like terms: 20 + -20 = 0
0 + 21a = 42 + -20
21a = 42 + -20

Combine like terms: 42 + -20 = 22
21a = 22

Divide each side by '21'.
a = 1.047619048

Simplifying
a = 1.047619048

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