42=7*b

Solution for 42=7*b equation:

Simplifying
42 = 7b

Solving
42 = 7b

Solving for variable 'b'.

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

Add '-7b' to each side of the equation.
42 + -7b = 7b + -7b

Combine like terms: 7b + -7b = 0
42 + -7b = 0

Add '-42' to each side of the equation.
42 + -42 + -7b = 0 + -42

Combine like terms: 42 + -42 = 0
0 + -7b = 0 + -42
-7b = 0 + -42

Combine like terms: 0 + -42 = -42
-7b = -42

Divide each side by '-7'.
b = 6

Simplifying
b = 6