10=0.2(3)+b

Solution for 10=0.2(3)+b equation:

Simplifying
10 = 0.2(3) + b

Multiply 0.2 * 3
10 = 0.6 + b

Solving
10 = 0.6 + b

Solving for variable 'b'.

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

Add '-1b' to each side of the equation.
10 + -1b = 0.6 + b + -1b

Combine like terms: b + -1b = 0
10 + -1b = 0.6 + 0
10 + -1b = 0.6

Add '-10' to each side of the equation.
10 + -10 + -1b = 0.6 + -10

Combine like terms: 10 + -10 = 0
0 + -1b = 0.6 + -10
-1b = 0.6 + -10

Combine like terms: 0.6 + -10 = -9.4
-1b = -9.4

Divide each side by '-1'.
b = 9.4

Simplifying
b = 9.4