Վարժ․ 1273
ա․ 7/25+2/5+6/25ч=7/25+2*5/25+6/25=7/25+10/25+6/25=23/25
գ․ 9/32+7/4+15/32=9/32+7*8/32+15/32=9/32+56/32+15/32=80/32
ե․ 71/42+[13/6+25/42]=71/42+13*7/42+25/42=71/42+91/42+25/4=116/42+71/42=187/42
Վարժ․ 1276
ա․ 2/7+5/21+32/49+9/14=2*42/294+5*14/294+32*6/294+9*21/294=84/294+70/294+189/294+194/294+194=535/294
բ․ 3/20+17/6+14/5+49/20=3*3/60+17*10/60+14*12/60+49*3/60=9/60170/60+168/60+147/60=494/60
գ․ 5/613/24+7/18+11/12=5*12/72+13*3/72+7*4/72+11*6/72=60+36+25+66/72=196/72
դ․ 8/25+31/35+16/15+11/75=8*21/525+31*15/525+16*35/525+11*7/525=168+465+560+77/525=1270/525
ե․ 10/9+28/27+13/36+7/12=10*12/108+28*4/108+13*3/108+7*9/108=120+112+39+63/108=334/108
զ․ 13/64+15/32+3/18+5/16=13*9/576+15*18/576+3*32/576+5*36/576=117+270+96+180/576=663/576
Խնդիր 1289
X-8-11+15=43
X=43+8+11-15=47
Ռոբերտ Մխիթարյան 