-7(3-5a)=-231

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Solution for -7(3-5a)=-231 equation: 


Simplifying
-7(3 + -5a) = -231
(3 * -7 + -5a * -7) = -231
(-21 + 35a) = -231

Solving
-21 + 35a = -231

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 + 35a = -231 + 21

Combine like terms: -21 + 21 = 0
0 + 35a = -231 + 21
35a = -231 + 21

Combine like terms: -231 + 21 = -210
35a = -210

Divide each side by '35'.
a = -6

Simplifying
a = -6

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