-3(7-3a)=-93

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Solution for -3(7-3a)=-93 equation: 


Simplifying
-3(7 + -3a) = -93
(7 * -3 + -3a * -3) = -93
(-21 + 9a) = -93

Solving
-21 + 9a = -93

Solving for variable 'a'.

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

Add '21' to each side of the equation.
-21 + 21 + 9a = -93 + 21

Combine like terms: -21 + 21 = 0
0 + 9a = -93 + 21
9a = -93 + 21

Combine like terms: -93 + 21 = -72
9a = -72

Divide each side by '9'.
a = -8

Simplifying
a = -8

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