Question

Answer 1

\(2,\\ x=325:456\\ x=\dfrac{325}{456}\\ b,x=1792:64\\ x=28\\ c,x=1428:42\\ x=34\\ d,x=9792:16\\ x=612\)

Bài 3

Diện tích hình thoi là :

\(S=\dfrac{1}{2}.123.456=28044\left(cm^2\right)\)

Answer 2

1) 

a) =41076

b) 137,9846

c) 196910

d) 142,0714

e) 133,0666

x) 410910

z) 26864

2) x.456=325

x=325:456

x=\(\dfrac{325}{456}\)

1792:x=64

x=1792:64

x=28

42.x=1428

x=1428:42

x=34

x.16=9792

x=9792:16

x=612