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a = (1×7+1)/7 = 8/7
ma = (8/7 + 3/125)/2 amplifici prima fractie cu 125, a doua cu 7
ma =(1000+21)/875 ×1/2=
1021/1750
mg = V(8/7 × 3/125) = V(24/875) = V24 / V875 = 2V6 / 5V35 rationalizat cu V35
= 2V210 / 175