8.4 ÷ = 2.1

8.4 ÷ = 2.1

8.4 ÷ = 2.1

8.4 ÷ = 2.1

8.4 ÷ = 2.1

Dear Student

8.4 ÷ 4 = 2.1
Let us assume the missing fraction be x, Then,

8.4 ÷ x = 2.1

8.4/x = 2.1
By cross multiplication, we get,

x = 8.4/2.1
x = 84/21...[divide both numerator and denominator by 3]
x = 28/7... [divide both numerator and denominator by7]
x =4


Thanks