Question

Tìm x:

2480 - 4710 : 3 + [ 200 - ( 15x - 5 ) ] = 1010.

Answer 1

Tìm x:

2480 - 4710 : 3 + [ 200 - ( 15x - 5 ) ] = 1010.

=> 2480-1570+[200-(15x-5)]=1010

=> 910+[200-(15x-5)]=1010

=> 200-(15x-5)=1010-910

=> 15x-5=200-100

=> 15x=100+5

=> x=105:15

=> x=7

Answer 2

2480 - 4710 : 3 + [ 200 - ( 15x - 5)  ] = 1010

4710:3+[200-(15x-5)]=2480-1010

4710:3+[200-[15x-5]]=1470

1570+[200-[15x-5]]=1470

200-[15x-5]=1470-1570

200-[15x-5]=-100

15x-5=200+100

15x-5=300

15x=300-5

15x=295

x=295:15