Question

Tìm x, biết :  

[212 + (48 - 2x)] :40- 3= 3

Answer 1

<=>(212+(48-2x)):40=6

<=>212+(48-2x)=240

<=>48-2x=28

<=>2x=20

<=>x=10

Answer 2

212+(48-2x):40=6

212+(48-2x)=240

48-2x=28

2x=20

x=10

Answer 3

số đps là

[ 212 + ( 48 - 2x )] : 40 - 3 = 3

 [ 212 + ( 48 - 2x )] :40=3+3

 [ 212 + ( 48 - 2x )] : 40=6

[ 212 +  ( 48 -2x )] =6 x  40

 [ 212 + ( 48 - 2x )] =240

( 48 - 2x ) = 240 - 212

 ( 48-2x ) = 28

2x= 28+48

2x= 76

x= 76 : 2

x= 38

Answer 4

Phạm Nguyễn Hùng Nguyên làm đúng rồi

Answer 5

[212+(48-2x)]:40-3=3

[212+(48-2x)]:40=3+3

[212+(48-2x)]:40=6

[212+(48-2x)]=40x6

[212+(48-2x)]=240

(48-2x)=240-212

48-2x=28

2x=28+48

2x=76

x=76:2

x=38