\(2,\\ x=325:456\\ x=\dfrac{325}{456}\\ b,x=1792:64\\ x=28\\ c,x=1428:42\\ x=34\\ d,x=9792:16\\ x=612\)
Bài 3
Diện tích hình thoi là :
\(S=\dfrac{1}{2}.123.456=28044\left(cm^2\right)\)
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