-7(8+3b)=-140

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Solution for -7(8+3b)=-140 equation: 


Simplifying
-7(8 + 3b) = -140
(8 * -7 + 3b * -7) = -140
(-56 + -21b) = -140

Solving
-56 + -21b = -140

Solving for variable 'b'.

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

Add '56' to each side of the equation.
-56 + 56 + -21b = -140 + 56

Combine like terms: -56 + 56 = 0
0 + -21b = -140 + 56
-21b = -140 + 56

Combine like terms: -140 + 56 = -84
-21b = -84

Divide each side by '-21'.
b = 4

Simplifying
b = 4

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