`35/75 : 19/25 + 81/25 + 4.2/7`
=`38/75 xx 25/18 + 81/25 + 8/7`
=` 2/3 + 81/25 + 8/7`
= `293/75 + 8/7`
= `2651/525`
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Các câu hỏi tương tự
\(\dfrac{26}{19}.\dfrac{4}{25}+\dfrac{7}{5}.\dfrac{3}{5}-\dfrac{4}{25}.\dfrac{7}{19}\)
1/ (left(-dfrac{2}{3}right)^2 x dfrac{-9}{8} - 25% x dfrac{-16}{5} 2/ -1dfrac{2}{5} x 75% + dfrac{-7}{5} x 25% 3/ -2dfrac{3}{7} x (-125%) + dfrac{-17}{7} x 25% 4/ (-2)^3 x (dfrac{3}{4} x 0.25) : (2dfrac{1}{4} - 1dfrac{1}{6})
Đọc tiếp
1/ (\(\left(-\dfrac{2}{3}\right)\)\(^2\) x \(\dfrac{-9}{8}\) - 25% x \(\dfrac{-16}{5}\)
2/ -1\(\dfrac{2}{5}\) x 75% + \(\dfrac{-7}{5}\) x 25%
3/ -2\(\dfrac{3}{7}\) x (-125%) + \(\dfrac{-17}{7}\) x 25%
4/ (-2)\(^3\) x (\(\dfrac{3}{4}\) x 0.25) : (2\(\dfrac{1}{4}\) - 1\(\dfrac{1}{6}\))
Thực hiện phép tính (tính hợp lí nếu có thể):
a) \(\dfrac{5}{3}.\dfrac{7}{25}+\dfrac{5}{3}.\dfrac{21}{25}-\dfrac{5}{3}.\dfrac{7}{25}\) b) 250% + \(19\dfrac{3}{11}.\dfrac{7}{26}-6\dfrac{3}{11}.\dfrac{7}{26}\)
6 tháng 2 2023 lúc 18:33
a ) \(\dfrac{7}{-25}\) + \(\dfrac{-8}{25}\)
b ) \(\dfrac{7}{21}\) - \(\dfrac{9}{-36}\)
c )\(\dfrac{-3}{4}\) + \(\dfrac{2}{7}\) + \(\dfrac{1}{4}\)+\(\dfrac{5}{7}\)
Tính hợp lí:
d) \(\dfrac{-7}{9}.\dfrac{3}{11}+\dfrac{-7}{9}.\dfrac{8}{11}+1\dfrac{7}{9}\)
e) \(\dfrac{7}{35}.\dfrac{10}{19}+\dfrac{7}{35}.\dfrac{9}{19}-\dfrac{2}{35}\)
f) \(\left(-25\right).125.4.\left(-8\right).\left(-17\right)\)
Quy đồng mẫu các phân số
b) dfrac{17}{12} ; dfrac{31}{18} ; dfrac{8}{15}
c) dfrac{7}{15} ; dfrac{8}{25} ; dfrac{11}{75}
d) dfrac{8}{45} ; dfrac{13}{180} ; dfrac{4}{30}
e) dfrac{51}{136} ; dfrac{60}{108} ; dfrac{26}{156}
giải nhanh giúp t vs ccau ơi, nhanh + chi tiết tick
Đọc tiếp
Quy đồng mẫu các phân số
b) \(\dfrac{17}{12}\) ; \(\dfrac{31}{18}\) ; \(\dfrac{8}{15}\)
c) \(\dfrac{7}{15}\) ; \(\dfrac{8}{25}\) ; \(\dfrac{11}{75}\)
d) \(\dfrac{8}{45}\) ; \(\dfrac{13}{180}\) ; \(\dfrac{4}{30}\)
e) \(\dfrac{51}{136}\) ; \(\dfrac{60}{108}\) ; \(\dfrac{26}{156}\)
giải nhanh giúp t vs ccau ơi, nhanh + chi tiết = tick
38/75 ÷ 19/25 + 81/25 + 4. 2/7
1.tính
a)\(\left(4-\dfrac{12}{5}\right).\dfrac{25}{8}-\dfrac{2}{5}:\dfrac{-4}{25}\)
b)\(\left(\dfrac{-5}{24}+\dfrac{3}{4}-\dfrac{7}{12}\right):\left(\dfrac{-5}{16}\right)\)
c)\(\dfrac{6}{7}+\dfrac{5}{4}:\left(-5\right)-\dfrac{-1}{28}.\left(-2\right)^2\)
ai giải đc mik sẽ tick
bài 1:tínha)left(dfrac{-7}{15}-dfrac{27}{70}right)-left(dfrac{8}{15}+dfrac{43}{70}right)b)dfrac{3}{7}+left(dfrac{-1}{5}+dfrac{-3}{7}right)c)left(4-dfrac{12}{5}right).dfrac{25}{8}-dfrac{2}{5}:dfrac{-4}{25}d)left(dfrac{-5}{24}+dfrac{3}{4}-dfrac{7}{12}right):left(-dfrac{5}{16}right)e)dfrac{-5}{7}.dfrac{2}{11}+dfrac{-5}{7}.dfrac{9}{11}g)dfrac{6}{7}+dfrac{5}{4}:left(-5right)-dfrac{-1}{28}.left(-2right)^2
Đọc tiếp
bài 1:tính
a)\(\left(\dfrac{-7}{15}-\dfrac{27}{70}\right)-\left(\dfrac{8}{15}+\dfrac{43}{70}\right)\)
b)\(\dfrac{3}{7}+\left(\dfrac{-1}{5}+\dfrac{-3}{7}\right)\)
c)\(\left(4-\dfrac{12}{5}\right).\dfrac{25}{8}-\dfrac{2}{5}:\dfrac{-4}{25}\)
d)\(\left(\dfrac{-5}{24}+\dfrac{3}{4}-\dfrac{7}{12}\right):\left(-\dfrac{5}{16}\right)\)
e)\(\dfrac{-5}{7}.\dfrac{2}{11}+\dfrac{-5}{7}.\dfrac{9}{11}\)
g)\(\dfrac{6}{7}+\dfrac{5}{4}:\left(-5\right)-\dfrac{-1}{28}.\left(-2\right)^2\)