42=10b

Solution for 42=10b equation:

Simplifying
42 = 10b

Solving
42 = 10b

Solving for variable 'b'.

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

Add '-10b' to each side of the equation.
42 + -10b = 10b + -10b

Combine like terms: 10b + -10b = 0
42 + -10b = 0

Add '-42' to each side of the equation.
42 + -42 + -10b = 0 + -42

Combine like terms: 42 + -42 = 0
0 + -10b = 0 + -42
-10b = 0 + -42

Combine like terms: 0 + -42 = -42
-10b = -42

Divide each side by '-10'.
b = 4.2

Simplifying
b = 4.2