-1-4b=21

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Solution for -1-4b=21 equation: 


Simplifying
-1 + -4b = 21

Solving
-1 + -4b = 21

Solving for variable 'b'.

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

Add '1' to each side of the equation.
-1 + 1 + -4b = 21 + 1

Combine like terms: -1 + 1 = 0
0 + -4b = 21 + 1
-4b = 21 + 1

Combine like terms: 21 + 1 = 22
-4b = 22

Divide each side by '-4'.
b = -5.5

Simplifying
b = -5.5

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