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Cum se calculeaza?
1. 4X-1/5; 2. -2X-1/3; 3. 2X-1/4-3/4; 4. X/2+1/5= 4X-3/10; 5. 3X-7/2=4X-3/3; 6. 2X-5/4=3X+4/5; 7. X/2+5/6=1/3; 8. 2X-1/3-X-2/4=3/2. V-as fi recunoscator.