Question

помогите пожалуйста решить выражение:

(1/6+0.1+1/15):(1/6+0.1-1/15)*2.52

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(0.5_1/3+0.25-1/5):(0,25-1/6)*7/13

 

Answer 1

1)(5/30+3/30+2/30):(5/30+3/30-2/30)*2.52=(10/30)*(30/6)*2.52=(10/6)*(252/100)=

=252/6=42

2)(150/300-100/300+75/300-60/300):(75/300-50/300)*7/13=(115/300)*(300/25)*7/13=

=(23/5)*(7/13)=161/65

Answer 2

$(frac{1}{6}+frac{1}{10}+frac{1}{15}):(frac{1}{6}+frac{1}{10}-frac{1}{15})*2.52 (frac{5}{10}-frac{1}{3}+frac{5}{20}-frac{1}{5}):(frac{5}{20}-frac{1}{6)*frac{7}{13}$=$frac{(frac{10+6+4}{60}):(frac{10+6-4}{60}*2.52}{(frac{30-20+15-12}{60}):(frac{15-10}{60})*frac{7}{13}}$=$frac{frac{20}{60}:frac{12}{60}*2.52}{frac{13}{60}:frac{5}{60}*frac{7}{13}}$=$frac{frac{20}{12}*2.52}{frac{13}{5}*frac{7}{13}}$=$frac{frac{20}{12}*frac{252}{100}}{frac{13}{5}*frac{7}{13}}$=$frac{frac{21}{5}}{frac{7}{5}}$=$frac{21}{5}*frac{5}{7}=frac{21}{7}=3$