222222 xxx
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2 + 22 + 222 + 2222+ 22222 + 222222 + 222222 = 446912.
tk mk nhé. đúng lun đó nha ! ^^
1. It's time for the children to be in bed. It's already 11o'clock.
2. It's time for you to get a holiday. You need one now.
3. It's time for Mary to be here. She is late.
4. It's time for the train to leave the station. It's already 5 minutes late.
5. It's time for you to have a parties.
6. It's time for your company to have some changes.
7. It's time for Tim to get up. It's already 10 o'clock.
8. It's time to stop treating Tommy a child. He's 18 years old.
9. It's time to go home immediately. I's to late.
10. It's time for the window to be cleaned. It's very dirty.
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
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