Մաթեմատիկա 09.05.2018

Առաջադրանք 1.

457
ա) 1/2+1/4=2/4+1/4=3/4
բ) 1/3+1/4=4/12+3/12=7/12
գ) 5/6+2/9=5/18+4/18=9/18
դ) 7/8+5/18=105/144+40/144=145/144
ե) 11/12+3/18=33/36+6/36=39/36
զ) 7/20+11/15=21/60+44/60=65/60
է) 5/24+41/36=15/72+82/72=97/72
ը) 9/16+81/24=27/48+162/48=189/48
թ) 31/28+5/21=93/84+15/84=108/84
ժ) 7/32+5/28=49/224+40/224=89/224
ժա) 19/36+43/32=387/288+152/288=539/288
ժբ) 41/42+37/18=246/252+518/252=764/252

Առաջադրանք 2.

3457
1/2-1/3=3/6-2/6=1/6
1/2-1/4=2/4-1/4=1/4
2/3-1/4=8/12-3/12=5/12
3/5-2/7=21/25-10/35=11/35
7/12-5/18=21/36-10/36=11/36
6/5-11/15=18/15-11/15=7/15
27/24-19/32=108/96-57/96=51/96
25/81-5/18=50/162-45/162=5/162
35/48-17/36=105/144-68/144=37/144
43/64-15/24=129/192-125/192=4/192
81/56-3/14=81/56-12/56=69/56
72/169-5/26=144/338-65/338=79/338
267/1024-15/640=1335/5120-120/5120=1215/5120
23/625-9/250=46/1250-45/1250=1/1250
413/144-69/96=826/288-207/288=619/288
249/1500-36/375=249/1500-146/1500

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