4(-1.8)=b

Solution for 4(-1.8)=b equation:

Simplifying
4(-1.8) = b

Multiply 4 * -1.8
-7.2 = b

Solving
-7.2 = 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.
-7.2 + -1b = b + -1b

Combine like terms: b + -1b = 0
-7.2 + -1b = 0

Add '7.2' to each side of the equation.
-7.2 + 7.2 + -1b = 0 + 7.2

Combine like terms: -7.2 + 7.2 = 0.0
0.0 + -1b = 0 + 7.2
-1b = 0 + 7.2

Combine like terms: 0 + 7.2 = 7.2
-1b = 7.2

Divide each side by '-1'.
b = -7.2

Simplifying
b = -7.2