Сложите дроби, предварительно сократите их. 5/30 и 4/16 , 32/64 и 10/30, 50/75 и 20/120, 6/16 и 12/27

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5/30 + 4/16 = 40/240   + 60/240 = 100/240 = 10/24 = 5/12
 32/64 + 10/30 = 480/960 + 320/960 = 800/960 = 80/96 = 10/12=5/6
 50/75 + 20/120=   1200/1800 + 300/1800 = 1500/1800 = 5/6
6/16 +12/27 = 162/432 + 192/432 = 354/432= 59/72