-5(3+b)=20

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Solution for -5(3+b)=20 equation: 


Simplifying
-5(3 + b) = 20
(3 * -5 + b * -5) = 20
(-15 + -5b) = 20

Solving
-15 + -5b = 20

Solving for variable 'b'.

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

Add '15' to each side of the equation.
-15 + 15 + -5b = 20 + 15

Combine like terms: -15 + 15 = 0
0 + -5b = 20 + 15
-5b = 20 + 15

Combine like terms: 20 + 15 = 35
-5b = 35

Divide each side by '-5'.
b = -7

Simplifying
b = -7

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