Question

calculati:13/18+5/12=
7/18+2/15=
5/9-1/3=
3/4-5/8=
5/6-1/8=
3intreg11/15+1intreg7/10=
9intreg3/4+3intreg1/6=
11intreg7/12+6intreg11/18=
2intreg1/18-1/9=
6intreg3/8-2intreg3/4=
4intreg2/15-3intreg5/12=
ajutati-ma va rog frumos am proba day coroana!!!!!

Answer 1

13/18+5/12=2*13/2*18+3*5/3*12=26/36+15/36=(26+15)/36=41/36
7/18+2/15=5*7/5*18+6*2/6*15=35/90+12/90=(35+12)/90=47/90
5/9-1/3=5/9-3/9=(5-3)/9=2/9
3/4-5/8=2*3/2*4-5/8=6/8-5/8=(6-5)/8=1/8
5/6-1/8=4*5/4*6-3*1/3*8=20/24-3/24=(20-3)/24=17/24
3întregi11/15+1întreg7/10=(3*15+11)/15+(1*10+7)/10=56/15+17/10=112/30+51/30=163/30
9întregi3/4+3întregi1/6=(9*4+3)/4+(3*6+1)/6=39/4+19/6=117/12+38/12=155/12
11întregi7/12+6întregi11/18=(11*12+7)/12+(6*18+11)/18=139/12+59/18=(417+118)/36=535/36
2întregi1/18-1/9=(2*18+1)/18-2*1/2*9=37/18-2/18=35/18
6întreg3/8-2întregi3/4=(6*8+3)/8-(2*4+3)/4=51/8-11/4=51/8-22/8=(51-22)/8=29/8
4întregi2/15-3întregi5/12=(4*15+2)/15-(3*12)/5=62/15-36/5=62/15-108/15=(62-108)/15=-46/15