(8.7x+1.2)÷4=5..

问题描述:

(8.7x+1.2)÷4=5..

x=(5*4-1.2)/8.7=2.16

8.7x+1.2=5.0×4
8.7x+1.2=20
8.7x=20-1.2
8.7x=18.8
x=188|87

2.1609195402298850574712643678161

(8.7x+1.2)÷4=5.0
8.7x+12=5.0×4
8.7x+12=20
8.7x=20-12=8
x=8÷8.7
x=80/87

8.7x+1.2=20
x=188/87

29分之66即(66/29)

8.7x+12=5.0×4
8.7x+12=20
8.7x=20-12=8
x=8÷8.7
x=80/87

8.7x+1.2=5.0x4
8.7x+1.2=20
8.7x=20-1.2
8.7x=18.8
x=188/87