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a)\(\Leftrightarrow\)\(x(27+30+43)=210500\)
\(\Leftrightarrow\)\(100x=210500\)
\(\Leftrightarrow\)\(x=2105\)
b)\(\Leftrightarrow\)\(x(128-12-16)=5208000\)
\(\Leftrightarrow\)\(100x=5208000\)
\(\Leftrightarrow\)\(x=52080\)
\(x\times27+x\times30+x\times43=210500\)
\(\Leftrightarrow x\times\left(27+30+43\right)=210500\)
\(\Leftrightarrow x\times100=210500\)
\(\Leftrightarrow x=2105\)
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4800: ( x x 16) = 25 x x 16 = 4800 : 25 x x 16 = 192 x = 192 : 16 x = 12 |
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A) AB x X = ABAB => X = ABAB : AB = 101
B) X x A = AA => X = AA : A = 11
C) ABC x X = ABCABC => X = ABCABC : ABC = 1001
D) AB0AB0 : X = AB => X = AB0AB0 : AB = 10010
Các câu sau bạn tự làm nhé . Nhớ Tk cho mình nha Ok !
a, x * a = aa
x = aa : a
x = 11
b, ab * x = abab
x = abab : ab
x = 101
c, abc * x = abcabc
x = abcabc : abc
x = 1001
d, xx + x + 5 = 125
x*(11 + 1) + 5 = 125 - 5
x*12 = 120
x = 120 : 12
x = 10
e, xxx + xx + x + x = 992
x*(111 + 11 + 1 + 1) = 992
x*124 = 992
x = 992 : 124
x = 8
f, 4725 + xxx + xx + x = 54909
x*(111+11+1) = 54909 - 4725
x*123 = 50184
x = 50184 : 123
x = 408
g, xxx - xx -x - 25 = 4430
x*(111-11-1) = 4430 + 25
x*99 = 4455
x = 4455 : 99
x = 45
h, xxx + xx + x + x + x + 1 = 1001
x*(111 + 11 + 1 + 1 + 1) = 1001 - 1
x* 125 = 1000
x = 1000 : 125
x = 8
Chúc bạn học tốt
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Lời giải:
\(\frac{4}{9}\times \frac{3}{7}\times \frac{7}{4}=\frac{1}{3}\)
\(\frac{6}{5}\times \frac{4}{5}\times \frac{25}{16}=\frac{3}{2}\)
\(\frac{7}{8}\times \frac{16}{9}\times \frac{3}{14}=\frac{1}{3}\)
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xxxx-xx-x-25=4430
xxxx-xx-x =4430-25(tim so hang)
Xx111-Xx11-x=4405
Xx(111+11+1)=4405
Xx1099=4405
x =4405:1099(tim thua so)
x =4(dư 9)
a. 37500 b. x = 5600