3=3(-2)+b

Solution for 3=3(-2)+b equation:

Simplifying
3 = 3(-2) + b

Multiply 3 * -2
3 = -6 + b

Solving
3 = -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.
3 + -1b = -6 + b + -1b

Combine like terms: b + -1b = 0
3 + -1b = -6 + 0
3 + -1b = -6

Add '-3' to each side of the equation.
3 + -3 + -1b = -6 + -3

Combine like terms: 3 + -3 = 0
0 + -1b = -6 + -3
-1b = -6 + -3

Combine like terms: -6 + -3 = -9
-1b = -9

Divide each side by '-1'.
b = 9

Simplifying
b = 9