7(-3n-4)=140

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Solution for 7(-3n-4)=140 equation: 


Simplifying
7(-3n + -4) = 140

Reorder the terms:
7(-4 + -3n) = 140
(-4 * 7 + -3n * 7) = 140
(-28 + -21n) = 140

Solving
-28 + -21n = 140

Solving for variable 'n'.

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

Add '28' to each side of the equation.
-28 + 28 + -21n = 140 + 28

Combine like terms: -28 + 28 = 0
0 + -21n = 140 + 28
-21n = 140 + 28

Combine like terms: 140 + 28 = 168
-21n = 168

Divide each side by '-21'.
n = -8

Simplifying
n = -8

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