4 1/9 : х = 7,4,
х = 4 1/9 : 7,4,
х = 37/9 : 74/10,
х = 37/9 * 10/74,
х = 5/9,
х : 7,5 = 6/17,
х = 7,5 * 6/17,
х = 75/10 * 6/17,
х = 45/17,
х = 2 11/17,
9 2/11х = 10,1,
х = 10,1 : 9 2/11,
х = 101/10 : 101/11,
х = 101/10 * 11/101,
х = 11/10,
х = 1 1/10 (или 1,1)
11/18-14/27 х=5/12
14/27 х = 11/18-5/12
14/27 х = 22/36-15/36 (привели к общему знаменателю)
14/27 х = 7/36
х= 7/36 : 14/27
х= (7*27)/(36*14)
<u>х=3/8</u>
600/2=300конфет за 1с
300*4=1200конфет за 4 с
Ствь класс
-5/9(54/10p-9/5m)-64/10(-3/8p+25/10m)=-5/9*54/10p+5/9*9/5m+64/10*3/8p-64/10*25/10m=-3p+m+2,4p-16=-0,6p-15m, p=-10,m=0,1=> -0,6*(-10)-15*0,1=6-1,5=4,5