324 : 218 . 33 +(17.58 – 17 – 17.43)
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\(17,5\times43+57\times57\\ =17,5\times\left(43+57\right)\\ =17,5\times10\\ =175\)
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\(\dfrac{15}{17}.\dfrac{218}{219}.\dfrac{-17}{15}=-\dfrac{218}{219}\)
15/17 . 218/219 . -17/15
=15/17 . -17/15 . 218/219
= -1 . 218/219
= - 218/219
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a) y × 33 = 1386
y = 1386 : 33
y = 42
b) 36 × y = 27612
y = 27612 : 36
y = 767
c) y : 50 = 218
y = 218 x 50
y = 10900
a) y × 33 = 1386
y = 1386 : 33
y = 42
b) 36 × y = 27612
y = 27612 : 36
y = 767
c) y : 50 = 218
y = 218 x 50
y = 10900
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289 : 17 - 324 : 18 + 18 :3 = 5
ai đi qua xin để lại cho mình 1 k nhé!
Xin kết bạn cùng mình nhé!
Chúc các bạn học tốt!
Thankyouvery much!
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Bài 6:
Đổi 4 giờ 30 phút = 4,5 giờ
Vận tốc xe đạp là:
54 : 4,5 = 12 (km/h)
Vận tốc xe máy là: 54 : 1,5 = 36 (km/h)
Mỗi giờ xe máy đi hơn xe đạp số ki-lô-mét là:
36 - 12 = 24 (km/h)
Đáp số: 24 km/h
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Câu 1 :\(289:17-324:18+18:3\)
\(=17-18+6\)
\(=-1+6\)
\(=5\)
Câu 2 : \(18.3-182+3.\left(51:17\right)\)
\(=18.3-182+3.3\)
\(=54-182+9\)
\(=-128+9\)
\(=-119\)
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a: \(4\cdot3^3-75:5^2\)
\(=4\cdot27-\dfrac{75}{25}\)
=108-3
=105
b: \(7\cdot2^4-16\cdot3\)
\(=16\cdot7-16\cdot3\)
=16(7-3)
=16*4=64
c: \(2^3\cdot17-2^3\cdot14\)
\(=8\cdot17-8\cdot14\)
=8(17-14)
=8*3
=24
d: \(45+\dfrac{54}{3^2}\)
\(=45+\dfrac{54}{9}\)
=45+6
=51
e: \(17\cdot85+15\cdot17-120\)
\(=17\left(85+15\right)-120\)
=1700-120
=1580
f: \(\dfrac{3^{24}}{3^{21}}+2^2\cdot2^3\)
\(=3^3+2^5\)
=27+32
=59
g: \(92+4^3:8\)
=92+64/8
=92+8
=100
h: \(5\cdot2^3+7^{11}:7^9-1^{2023}\)
\(=5\cdot8+49-1\)
=40+48
=88
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`@` `\text {Ans}`
`\downarrow`
`x - 32 \div 16 = 18`
`=> x - 2 = 18`
`=> x = 18 + 2`
`=> x = 20`
Vậy, `x = 20.`
`15 + 2x = 17`
`=> 2x = 17 - 15`
`=> 2x = 2`
`=> x = 2 \div 2`
`=> x = 1`
Vậy, `x = 1`
`324 - 13x = 57*5`
`=> 324 - 13x = 285`
`=> 13x = 324 - 285`
`=> 13x = 39`
`=> x = 39 \div 13`
`=> x = 3`
Vậy, `x = 3.`
`@` `\text {Kaizuu lv uuu}`
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TL :
\(324:218.33+\left(17.58-17-17.43\right)\)
\(\text{324 : 218 .33 + ( 17 . 58 .- 17 .1 - 17.43 )}\)
\(\text{324 : 218 . 33 + ( 17. ( 58 - 43 - 1 )}\)
\(324:218+33-\left(17.10\right)\)
\(324:251-170\)
\(324:81\)
\(=4\)
TL:
= 4
HT