Răspuns :
1. 3a+6b=24 |:3
a+2b=8
a=8-2b
a+26=?
8-2b+26=0
-2b+34=0
-2b=-34
2b=34
b=17
a+2b=8
a+34=8
a=8-34
a=-26
Deci, a+26=-26+26=0
2. x:17=15 r. 9
x=(17*15)+9
x=255+9
x=264
3. 3x-2=28
3x=30
x=10
a+2b=8
a=8-2b
a+26=?
8-2b+26=0
-2b+34=0
-2b=-34
2b=34
b=17
a+2b=8
a+34=8
a=8-34
a=-26
Deci, a+26=-26+26=0
2. x:17=15 r. 9
x=(17*15)+9
x=255+9
x=264
3. 3x-2=28
3x=30
x=10