-21=4b+19-6(-6b)

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Solution for -21=4b+19-6(-6b) equation:


Simplifying
-21 = 4b + 19 + -6(-6b)

Remove parenthesis around (-6b)
-21 = 4b + 19 + -6 * -6b

Multiply -6 * -6
-21 = 4b + 19 + 36b

Reorder the terms:
-21 = 19 + 4b + 36b

Combine like terms: 4b + 36b = 40b
-21 = 19 + 40b

Solving
-21 = 19 + 40b

Solving for variable 'b'.

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

Add '-40b' to each side of the equation.
-21 + -40b = 19 + 40b + -40b

Combine like terms: 40b + -40b = 0
-21 + -40b = 19 + 0
-21 + -40b = 19

Add '21' to each side of the equation.
-21 + 21 + -40b = 19 + 21

Combine like terms: -21 + 21 = 0
0 + -40b = 19 + 21
-40b = 19 + 21

Combine like terms: 19 + 21 = 40
-40b = 40

Divide each side by '-40'.
b = -1

Simplifying
b = -1

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