Question

1. Tìm x 

x * 36 + 72 = 3600

2000 - x : 47= 1896

x * 54 + x *55 + x * 56 = 3960

x * 163 - x *90 - x * 27 = 2484

x : 29 = 156 dư 26

2215 : x = 63 dư 10

 

Answer 1

<=> 36x=3528

=>x=98

b) <=>-x:47=104=>x=48888

c)<=>165x=3960=>x=24

d)<=>46x=2484=>x=54

c) x:29 =156 dư 26=>x=156x29+264550

e)2215:x=63 dư 10 =>x=2215:63+10=>x=2845/63

Answer 2

*) x × 36 + 72 = 3600

x × 36 = 3600 - 72

x × 36 = 3528

x = 3528 : 36

x = 98

*) 2000 - x : 47 = 1896

x : 47 = 2000 - 1896

x : 47 = 104

x = 104 × 47

x = 4888

*) x × 54 + x × 55 + x × 56 = 3960

x × (54 + 55 + 56) = 3960

x × 165 = 3960

x = 3960 : 165

x = 24

*) x × 163 - x × 90 - x × 27 = 2484

x × (163 - 90 - 27) = 2484

x × 46 = 2484

x = 2484 : 46

x = 54

*) x : 29 = 156 dư 26

x = 156 × 29 + 16

x = 4550

*) 2215 : x = 63 dư 10

x × 63 + 10 = 2215

x × 63 = 2215 - 10

x × 63 = 2205

x = 2205 : 63

x = 35