Răspuns :
a)( x:8)( 3+4)= 140
(x:8)7= 140
x:8= 140:7= 20
x= 20 * 8= 160
b) x+x-1= 19
2x= 19+1=20
x= 20:2= 10
c) 20:x+6+1=11
20:x+6= 11-1=10
20:x=10-6=4
x= 20:4=5
(x:8)7= 140
x:8= 140:7= 20
x= 20 * 8= 160
b) x+x-1= 19
2x= 19+1=20
x= 20:2= 10
c) 20:x+6+1=11
20:x+6= 11-1=10
20:x=10-6=4
x= 20:4=5
(x:4*2)*(3+4)=140
x:4*2=140:7
x:4*2=20
x:4=10
x=40
20:x +6+1=11
20:x=4
x=5
cred ca b) nu are enuntul bine scris.Verifica
x:4*2=140:7
x:4*2=20
x:4=10
x=40
20:x +6+1=11
20:x=4
x=5
cred ca b) nu are enuntul bine scris.Verifica