Ответ(ы) на вопрос:
Гость
N194
1) 8:3=2*2/3 2)57:9=6*3/9=6*1/3 3)98:15=6*8/15
N195
1) 2*1/3= 7/3
2)4*3/5=23/5
3)3*9/10=39/10
4)плохая фотка, я не вижу цифи
N196
1)7+8/19 =133/19+8/19=141/19
2)8/68+9=8/68+612/68=620/68
3) 3*5/16+4*7/16=7*12/16=112/16+12/16=124/16
4)12*8/13-8*4/13=4*4/13=52/13+4/13=56/13
5)5*17/21-3*8/21+4*7/21=6*13/21=126/21+13/21=129/21
6)14*8/10+5*1/10-5*7/10=14*2/10=140/10+2/10=142/10
Гость
194
1) [latex]8:3= \frac{8}{3} =2\frac{2}{3} [/latex]
2) [latex]57:9= \frac{57}{9} = \frac{19}{3} =6 \frac{1}{3} [/latex]
3) [latex]98:15= \frac{98}{15} =6 \frac{8}{15} [/latex]
195
1) [latex]2 \frac{1}{3} = \frac{2*3+1}{3} = \frac{6+1}{3} = \frac{7}{3} [/latex]
2) [latex]4 \frac{3}{5} = \frac{4*5+3}{5} = \frac{20+3}{5} = \frac{23}{5} [/latex]
3) [latex]3 \frac{9}{10} = \frac{3*10+9}{10} = \frac{30+9}{10} = \frac{39}{10} [/latex]
196
1) [latex]7+ \frac{8}{19}= \frac{133+8}{19} = \frac{141}{19} =7 \frac{8}{19} [/latex]
2) [latex] \frac{8}{68} +9= \frac{2}{17} +9= \frac{2+153}{17} = \frac{155}{17} =9 \frac{2}{17} [/latex]
3) [latex]3 \frac{5}{16} +4 \frac{7}{16} =(3+4)+( \frac{5}{16}+ \frac{7}{16} )=7+ \frac{5+7}{16}=7+ \frac{12}{16}=7+ \frac{3}{4}=7 \frac{3}{4} [/latex]
4) [latex]12 \frac{8}{13}-8 \frac{4}{13}= \frac{164}{13}- \frac{108}{13}= \frac{164-108}{13}= \frac{56}{13}=4 \frac{4}{13} [/latex]
5) [latex]5 \frac{17}{21}-3\frac{8}{21}+4\frac{7}{21}=\frac{122}{21}-\frac{71}{21}+\frac{91}{21}= \frac{122-71+91}{21}=\frac{142}{21}=6\frac{16}{21}[/latex]
6) [latex]14\frac{8}{10}+5\frac{1}{10}-6\frac{7}{10}=\frac{148}{10}+\frac{51}{10}-\frac{67}{10}= \frac{148+51-67}{10}=\frac{132}{10}=13.2[/latex]
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