4-3(3+7a)=-131

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Solution for 4-3(3+7a)=-131 equation:


Simplifying
4 + -3(3 + 7a) = -131
4 + (3 * -3 + 7a * -3) = -131
4 + (-9 + -21a) = -131

Combine like terms: 4 + -9 = -5
-5 + -21a = -131

Solving
-5 + -21a = -131

Solving for variable 'a'.

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

Add '5' to each side of the equation.
-5 + 5 + -21a = -131 + 5

Combine like terms: -5 + 5 = 0
0 + -21a = -131 + 5
-21a = -131 + 5

Combine like terms: -131 + 5 = -126
-21a = -126

Divide each side by '-21'.
a = 6

Simplifying
a = 6

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