1) 1/2 - 3/4 = - 1/4
<span>2) - 1/4 * (-5) = 1 ЦЕЛАЯ 1/4</span>
9-4 1/2=8 2/2-4 1/2=4 1/2
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НОК(4, 303) = 1212
4=2*2
303=2*2*3*101
НОК (121212, 151515) = 606060
121212=2*2*3*3*7*13*37
151515=3*3*5*7*13*37
НОК (40404, 363636) = 363636
40404=2*2*3*7*13*37
363636=2*2*3*3*3*7*13*37
НОК (242424, 181818) = 727272
242424=2*2*2*3*3*7*13*37
<span>181818=2*3*3*3*7*13*37</span>
D-разность A1-30 Формула An=A1+d*(n-1) 1)A51=30+(-6)*(51-1)=30+(-6)*50=30+(-300)=-270