Răspuns :
a+3200-800=4000
a+3200=4000+800
a+3200=4800
a=4800-3200
a=1600
sau
4000+800=4800
4800-3200=1600
a+3200=4000+800
a+3200=4800
a=4800-3200
a=1600
sau
4000+800=4800
4800-3200=1600
x -(asa pun eu nr la care m am gandit)
x+ 3200- 800=4000
x+ 3200= 4000+ 800
x+ 3200= 4800
x= 4800-3200
x= 1600
x+ 3200- 800=4000
x+ 3200= 4000+ 800
x+ 3200= 4800
x= 4800-3200
x= 1600