(\(\frac{-7}{15}\)) . \(\frac{5}{8}\).\(\frac{15}{-7}\). (-32)
=\(\frac{-7}{24}\). \(\frac{480}{7}\)
= -20
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Các câu hỏi tương tự
15/8-15/6-15/32+15/64 tren 3-3/2-3/4+3/8
giup minh voi bai nay kho qua di
Thuc hien phep tinh:
a.3/7.11/15+3/7:15/14+2/7
b.(-7/15).5/8.15/-7(-32)
c.[(1/9:8/27):-1/3]:81/128
d.-66(1/2-1/3+1/11)+124(-37)+63(-124)
thuc hien phep tinh(1/2+3/4+7/8+15/16+31/32+63/64) -5
ban nao lam duoc minh like cho>,<...........................!!!!!!!
Tính hợp lý
a)-41/-32.(15/8-16/41)+15/8.(41/32-8/3)
b)43/47.(18/37+47/43)-(43/47+37/36)
c)5/7.(1/2-1/3+4/7)+(1/3-1/2-4/7):7/5
A=-5/18+32/45-9/10+(-1/4+7/33-5/33)-(-15/12+6/11+8/15) = ?
Lam giup tui voi :
Trong mot mua giai bong da cup C1 , co 8 doi , 7 vong dau
Hoi co bao nhieu tran dau , biet tinh ca luot di luot ve !!!
giup voi
tinh nhanh
A=\dfrac{1}{3}-\dfrac{3}{4}-\left(\dfrac{-3}{5}\right)+\dfrac{1}{64}-\dfrac{2}{9}-\dfrac{1}{36}+\dfrac{1}{15}
B=\dfrac{1}{3}-\dfrac{3}{5}+\dfrac{5}{7}-\dfrac{7}{9}+\dfrac{9}{11}-\dfrac{11}{3}+\dfrac{13}{15}+\dfrac{11}{15}-\dfrac{9}{11}+\dfrac{7}{9}+\dfrac{7}{9}-\dfrac{5}{7}+\dfrac{3}{3}-\dfrac{1}{3}
giup minh nhe minh dang can gap
tinh gia tri bieu thuc sau
a , A = 1 / 1. 2. 3 + 1 / 2.3.4 + 1 / 3.4.5 + .... + 1 / 99.100.101
b , B = -5 / 7 + ( -21 / 25 - 14 / 100 )
c, C = -7 / 24 - (- 15 / 32 ) - (-17 / 24 ) + 7 / 32
Tinh cach hop li
A=5/12 . 3/4 - 6/8 : 7/15 + 3/4 : 7/12 - 6/8 . 8/15
B=(-2,5) . (-4) . (-7,9)