Question

15 x \(x\) =2730 : 13

2808 : \(x\) = 3527 - 3293

( \(x\) x 40 ) : 12 = 2400 : 15

( 1260 : \(x\) ) + 397 = 1692 - 1253

Giải hẳn ra giúp mình nha . Xin trân trọng cảm ơn .

Answer 1

a: =>15x=210

=>x=14

b: =>2809:x=234

=>x=2809/234

c: =>40x:12=160

=>40x=1920

=>x=48

Answer 2

15.x=2730:13

15.x=210

x=210:15

x=14

_________________________

2808:x=3527-3293

2808:x=234

x=2808:234

x=12

_____________________________

(x.40):12=2400:15

(x.40):12=160

x.40=160.12

x=1920:40

x=48

______________________________

(1260:x)+397=1692-1253

(1260:x)+397=439

1260:x=439-397

x=1260:42

x=30

 

 

Answer 3

Answer 4