Răspuns :
x=500-280
x=220
x=59:59
x=1
x=256:16
x=16
x=14-8
x=6
x=918-720
x=198
x=12345+1234
x=13579
x=220
x=59:59
x=1
x=256:16
x=16
x=14-8
x=6
x=918-720
x=198
x=12345+1234
x=13579
REZOLVARE
x+280=500
x=500-280
x=220
220+280=500
x×59=59
x=59÷59
x=1
1×59=59
16×x=256
x=256÷16
x=16
16×16=256
x+8=14
x=14-8
x=6
6+8=14
918-x=720
x=918-720
x=198
918-198=720
x-1234=12345
x=1234+12345
x=13579
13579-1234=12345
SUCCES
x+280=500
x=500-280
x=220
220+280=500
x×59=59
x=59÷59
x=1
1×59=59
16×x=256
x=256÷16
x=16
16×16=256
x+8=14
x=14-8
x=6
6+8=14
918-x=720
x=918-720
x=198
918-198=720
x-1234=12345
x=1234+12345
x=13579
13579-1234=12345
SUCCES