-3=-5(-4)+b

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Solution for -3=-5(-4)+b equation:


Simplifying
-3 = -5(-4) + b

Multiply -5 * -4
-3 = 20 + b

Solving
-3 = 20 + b

Solving for variable 'b'.

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

Add '-1b' to each side of the equation.
-3 + -1b = 20 + b + -1b

Combine like terms: b + -1b = 0
-3 + -1b = 20 + 0
-3 + -1b = 20

Add '3' to each side of the equation.
-3 + 3 + -1b = 20 + 3

Combine like terms: -3 + 3 = 0
0 + -1b = 20 + 3
-1b = 20 + 3

Combine like terms: 20 + 3 = 23
-1b = 23

Divide each side by '-1'.
b = -23

Simplifying
b = -23

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