tính:
A= 28/15+28/5*(165/56+5/24-21/63)
Những câu hỏi liên quan
-3/5 + 28 x 43/5 x 56 + 28 x 5/5 x 24 - 28 x 21/5 x 63
tính -3/5+28/5*(43/56+5/24-21/63)
\(=\dfrac{-3}{5}+\dfrac{28}{5}\cdot\dfrac{9}{14}=\dfrac{-3}{5}+\dfrac{18}{5}=\dfrac{15}{5}=3\)
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\(\dfrac{-3}{5}+\dfrac{28}{5}.\left(\dfrac{43}{56}+\dfrac{5}{24}-\dfrac{21}{63}\right)\)
= \(\dfrac{-3}{5}+\dfrac{28}{5}.\dfrac{9}{14}\)
= \(\dfrac{-3}{5}+\dfrac{18}{5}\)
= 3
nếu sai mog bạn thông cảm nhó :>
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(-9/10-15/16).(5/12-11/15-7/20)
5/14.1/3.-4/15:5/7
-3/5+28/5.(43/56+5/24-21/63)
-3/5+28/5.(43/56+5/24-21/63)
(7/20+11/45-15/22):11/20-26/45
Cach lam ro rang nhe
Thực hiện phép tính sau:
a)(9/10—15/16)(5/12—11/15—7/20)
b)—3/5+28/5(43/56+5/24—21/63)
\(\dfrac{-3}{5}+\dfrac{28}{5}.\left(\dfrac{43}{56}+\dfrac{5}{24}-\dfrac{21}{63}\right)\)
tính nhanh nếu có thể
\(\dfrac{-3}{5}+\dfrac{28}{5}.\left(\dfrac{43}{56}+\dfrac{5}{24}-\dfrac{21}{63}\right)\)
= \(\dfrac{-3}{5}+\dfrac{28}{5}.\dfrac{9}{14}\)
= \(\dfrac{-3}{5}+\dfrac{28.9}{5.14}\)
= \(\dfrac{-3}{5}+\dfrac{18}{5}\)
= \(\dfrac{\left(-3\right)+18}{5}\)
= \(\dfrac{15}{5}=3\)
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a) 2×24×25+3×41×16+6×2×8×17
b)15×360+15×2×27+1500
c)47×63+53×21+47×37+53
d)2×169×12-3×68×8-24
e)2×56×24-3×36×16+4×12×95-6×3×8×5
f)(36×15×169)÷(5×18×13)
h)(112+2×28-5×28)÷28
i)1448-(448+500)
\(\frac{-3}{5}+\frac{28}{5}\left(\frac{43}{56}+\frac{5}{24}-\frac{21}{63}\right)\)
\(\dfrac{-3}{5}+\dfrac{28}{5}x\left(\dfrac{43}{56}+\dfrac{5}{24}-\dfrac{21}{63}\right)\) < ai làm nhanh hộ mình nha >
cho mình nghi lại nha mn \(\dfrac{-3}{5}+\dfrac{28}{5}\cdot\left(\dfrac{43}{56}+\dfrac{5}{24}-\dfrac{21}{63}\right)\)
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