1+7(-3b)=

Solution for 1+7(-3b)= equation:

Simplifying
1 + 7(-3b) = 0

Remove parenthesis around (-3b)
1 + 7 * -3b = 0

Multiply 7 * -3
1 + -21b = 0

Solving
1 + -21b = 0

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 + -21b = 0 + -1

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

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

Divide each side by '-21'.
b = 0.04761904762

Simplifying
b = 0.04761904762