Răspuns :
3*4+x=9000
12+x=9000
x=9000-12
x=8988
y-7*932=2803
y-6254=2803 y=6524+2803
y=9327
12+x=9000
x=9000-12
x=8988
y-7*932=2803
y-6254=2803 y=6524+2803
y=9327