Question

 

Điền dấu +, -, x hoặc : vào chỗ chấm:

12.....54.....3.....7.....30....10= 45

55.....(7.....2).....10.....22....3.....34=45

12.....5.....3......4......5......2.....10=50

Answer 1

12+54:3+7+30-10=45

55:(7-2)x10-22:3+34=45

12x5:3-4x5:2+10=50

(12+54=66:3=22+7=29+30=59-10=49 ;55:(7-2)=11x5=55-22=33:3=11+34=45 ;12x5=60:3=20-4=16x5=80:2=40+10=50.Vậy thôi)

Answer 2

12+54:3+7+30-10=45

55:(7-2)x10-22:3+34=45

12x5:3-4x5:2+10=50

Answer 3

12 + 54 : 3 + 7 x 30 : 14 = 45

Answer 4

12 + 54 : 3 + 7 x 30 : 14 = 45

55 - ( 7 - 2 ) + 10 + 22 - 3 - 34 = 45

12 x 5 : 3 + 4 x 5 x 2 - 10 = 50

đúng 100% luôn

nhớ tk nha...

Answer 5

= 50 nha