-7(3a-3)=3(a-1)

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Solution for -7(3a-3)=3(a-1) equation:


Simplifying
-7(3a + -3) = 3(a + -1)

Reorder the terms:
-7(-3 + 3a) = 3(a + -1)
(-3 * -7 + 3a * -7) = 3(a + -1)
(21 + -21a) = 3(a + -1)

Reorder the terms:
21 + -21a = 3(-1 + a)
21 + -21a = (-1 * 3 + a * 3)
21 + -21a = (-3 + 3a)

Solving
21 + -21a = -3 + 3a

Solving for variable 'a'.

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

Add '-3a' to each side of the equation.
21 + -21a + -3a = -3 + 3a + -3a

Combine like terms: -21a + -3a = -24a
21 + -24a = -3 + 3a + -3a

Combine like terms: 3a + -3a = 0
21 + -24a = -3 + 0
21 + -24a = -3

Add '-21' to each side of the equation.
21 + -21 + -24a = -3 + -21

Combine like terms: 21 + -21 = 0
0 + -24a = -3 + -21
-24a = -3 + -21

Combine like terms: -3 + -21 = -24
-24a = -24

Divide each side by '-24'.
a = 1

Simplifying
a = 1

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