1.6=0.4(b-3)

Solution for 1.6=0.4(b-3) equation:

Simplifying
1.6 = 0.4(b + -3)

Reorder the terms:
1.6 = 0.4(-3 + b)
1.6 = (-3 * 0.4 + b * 0.4)
1.6 = (-1.2 + 0.4b)

Solving
1.6 = -1.2 + 0.4b

Solving for variable 'b'.

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

Add '-0.4b' to each side of the equation.
1.6 + -0.4b = -1.2 + 0.4b + -0.4b

Combine like terms: 0.4b + -0.4b = 0.0
1.6 + -0.4b = -1.2 + 0.0
1.6 + -0.4b = -1.2

Add '-1.6' to each side of the equation.
1.6 + -1.6 + -0.4b = -1.2 + -1.6

Combine like terms: 1.6 + -1.6 = 0.0
0.0 + -0.4b = -1.2 + -1.6
-0.4b = -1.2 + -1.6

Combine like terms: -1.2 + -1.6 = -2.8
-0.4b = -2.8

Divide each side by '-0.4'.
b = 7

Simplifying
b = 7