Question

ПОМОГИТЕ СРОЧНО,ЗАДАНИЕ ПО АЛГЕБРЕ

Answer 1

Объяснение:

1.

$\ 5\frac{1}{3}*9-2\frac{3}{4} *5\frac{1}{3}-7\frac{1}{2} *1\frac{5}{9}. \\ 1)\ 5\frac{1}{3}*9=\frac{16}{3} *9=\frac{16*9}{3}= 16*3=48.\\ 2)\ 2\frac{3}{4}*5\frac{1}{3} =\frac{11}{4} *\frac{16}{3}=\frac{11*16}{4*3}=\frac{44}{3} .\\ 3)\ 7\frac{1}{2} *1\frac{5}{9}= \frac{15}{2}*\frac{14}{9} =\frac{15*14}{2*9}=\frac{35}{3} .\\4)\ 48-\frac{44}{3}-\frac{35}{3}=48-\frac{44+35}{3}=48-\frac{79}{3} =48-26\frac{1}{3}=21\frac{2}{3} .$

2.

$\ 2\frac{1}{4} *2\frac{2}{27} +(3\frac{1}{6}+4\frac{5}{6}*\frac{11}{29})*1\frac{1}{15} .\\ 1)\ 2\frac{1}{4}*2\frac{2}{27}=\frac{9}{4}*\frac{56}{27} =\frac{14}{3}.\\ 2)\ 4\frac{5}{6}*\frac{11}{29}=\frac{29}{6} *\frac{11}{29}=\frac{11}{6}.\\ 3)\ 3\frac{1}{6}+\frac{11}{6}=\frac{19}{6}+\frac{11}{6}=\frac{19+11}{6}=\frac{30}{6}=5.\\ 4)\ 5*1\frac{1}{15}=5*\frac{16}{15} =\frac{5*16}{15} =\frac{16}{3}.\\ 5)\ \frac{14}{3}+\frac{16}{3}=\frac{14+16}{3}=\frac{30}{3}=10.$