Solution: 0.6x=4.8

x=4.8÷0.6

x=8

1.4:x= 1:0.75

Solution: x= 1.4×0.75.

x= 1.05

50.4X2.7+24.48÷24

=(50+0.4)×2.7+(24+0.48)÷24

=50×2.7+0.4×2.7+24÷24+0.48÷24

= 135+ 1.08+ 1+0.02

=( 135+ 1)+( 1.08+0.02)

= 136+ 1. 1

= 137. 1

9.4-5-2 and 2/5 inches

=9.4-2.4-5

=7-5

=2

(2-3/32+3/4)÷ 1/4

=(2-3/32+3/4)×4

=2×4-3/32×4+3/4×4

=8- 1/8+3

= 1 1- 1/8

= 10 7/8

[4-(0.5+2)]X0.75

=[2-0.5]×3/4

=2×3/4- 1/2×3/4

=3/2-3/8

=9/8