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ошсшпак
@ошсшпак
July 2022
1
4
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помогите с 513 номером пж все 4
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1MoNika1
1)(5/21+2/15)+2/21=(75/315+42/315)+2/21=117/315+2/21=117/315+30/315=147/315
2)(2/35+3/28)+1/28=(56/980+105/980)+1/28=161/980+1/28=161/980+35/980=196/980=98/490=49/245
3)(7/30+8/45)+(2/45+1/30)=(21/90+16/90)+(4/90+3/90)=37/90+7/90=44/90=22/45
4)(5/24+11/60)+(13/60+1/24)=(25/120+22/120)+(65/120)=47/120+67/120=114/120=57/60
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Answers & Comments
2)(2/35+3/28)+1/28=(56/980+105/980)+1/28=161/980+1/28=161/980+35/980=196/980=98/490=49/245
3)(7/30+8/45)+(2/45+1/30)=(21/90+16/90)+(4/90+3/90)=37/90+7/90=44/90=22/45
4)(5/24+11/60)+(13/60+1/24)=(25/120+22/120)+(65/120)=47/120+67/120=114/120=57/60