Solve using multiplication principle.
2.8x = 22.4
2.8x = 22.4
Divide both sides of the equation by 2.8.
To solve the equation using the multiplication principle, we want to isolate the variable x on one side of the equation.
The multiplication principle states that if you perform the same operation on both sides of an equation, it remains balanced. In this case, we want to perform the opposite operation of multiplication, which is division, to isolate x.
To do that, divide both sides of the equation by 2.8:
(2.8x) / 2.8 = 22.4 / 2.8
Simplifying this equation gives:
x = 8
So the solution to the equation 2.8x = 22.4 is x = 8.