x : 5 =17 + 8
x³ =125
4⁵:4³=
8¹² . 8³ : 8¹⁵=
7¹⁵ : 7¹³=
17¹⁵. 17¹⁰: 17²²=
5¹⁰ . 25 : 5¹¹=
15¹⁰ .225 : 15¹¹=
`@` `\text {Ans}`
`\downarrow`
`x^3 = 125`
`=> x^3 = 5^3`
`=> x = 5`
Vậy, `x = 5`
_____
`4^5 \div 4^3`
`=`\(4^{5-3}\)
`= 4^2`
______
\(8^{12}\cdot8^3\div8^{15}\)
`=`\(8^{12+3-15}\)
`=`\(8^0=1\)
______
\(7^{15}\div7^{13}\)
`=`\(7^{15-13}\)
`=`\(7^2\)
_______
\(17^{15}\cdot17^{10}\div17^{22}\)
`=`\(17^{15+10-22}\)
`= 17^3`
_______
\(5^{10}\cdot25\div5^{11}\)
`=`\(5^{10}\cdot5^2\div5^{11}\)
`=`\(5^{10+2-11}\)
`= 5`
_______
\(15^{10}\cdot225\div15^{11}\)
`=`\(15^{10}\cdot15^2\div15^{11}\)
`=`\(15^{12}\div15^{11}\)
`= 15`
`@` `\text {Kaizuu lv uuu}`
\(x^3=125\)
\(\Rightarrow x^3=5^3\)
\(\Rightarrow x=3\)
___________________
\(4^5:4^3\)
\(=4^{5-3}\)
\(=4^2=16\)
___________________
\(8^{12}.8^3:8^{15}\)
\(=8^{15}:8^{15}\)
\(=1\)
___________________
\(7^{15}:7^{13}\)
\(=7^{15-13}\)
\(=7^2=49\)
___________________
\(17^{15}.17^{10}:17^{22}\)
\(=17^{25}:17^{22}\)
\(=17^3=4913\)
___________________
\(5^{10}.25:5^{11}\)
\(=5^{10}.5^2:5^{11}\)
\(=5^{12}:5^{11}\)
\(=5^1=5\)
___________________
\(15^{10}.225:15^{11}\)
\(=15^{10}.15^2:15^{11}\)
\(=15^{12}:15^{11}\)
\(=15^1=15\)
__________________
* an . am = an+m
an : am = an-m
Chúc bạn học tốt
Tìm x nha
Giấu《 là dấu < hoặc bằng
1)-8/3+-1/3<x<-2/7+-5/7
2)8/17+5/17<×/17<10/17+5/17
8)-5/6+8/3+-29/6《x《-1/2+2+5/2
9)-8/11+2/11+13/11《x《8/15+9/15-2/15+2
7)×/5=-5/16+3/4-1/2
a) -5/17+3/17 <hoặc = x/17<13/17+-11/17
b) 5/6+-7/8 <hoặc =x/24 < hoặc = -5/12+5/8
làm hộ mình nha m.n
-9/46-4 1/23:(3 1/4 - x:3/5)+2 8/23=1
(6 2/7*x + 3/7):2 1/5-3/7=-1
5 8/17:x+(-1/17):x +3 1/17:17 1/3=4/17
Tìm x:
\(-\frac{5}{17}+\frac{3}{17}\le\frac{x}{17}\le\frac{13}{17}+-\frac{11}{17}\)
\(\frac{5}{6}+-\frac{7}{8}\le\frac{x}{24}\le-\frac{5}{12}+\frac{5}{8}\)
\(\frac{8}{17}+\frac{5}{17}< \frac{x}{17}< \frac{6}{17}+\frac{9}{17}\)
\(-\frac{6}{7}+\frac{3}{35}< \frac{x}{35}\le-\frac{2}{5}+\frac{3}{7}\)
ai nhanh và đúng mk tick
\(\Leftrightarrow\frac{-2}{17}\le\frac{x}{17}\le\frac{2}{17}\Rightarrow x\in\left(-2;-1;0;1;2\right)\)
\(\Leftrightarrow\frac{-1}{24}\le\frac{x}{24}\le\frac{5}{24}\Rightarrow x\in\left(-1;0;1;2;3;4;5\right)\)
2 câu sau tự làm nha
\(-\frac{5}{17}+\frac{3}{17}\le\frac{x}{17}\le\frac{13}{17}+-\frac{11}{17}\)
\(\frac{-2}{17}\le\frac{x}{17}\le\frac{2}{17}\)
=> \(x\in\left\{-2;-1;0;1;2\right\}\)
Tìm x:
a)5/8/17:x+(-4/17):x+3/1/7:17/1/3=4/11
b)|x|-5/3/7|x|-3/4=2|x|+(-8/7)
a) ( 21/22 + 3/5 + -21/22 ) : 1 2/5 9/17 x 8/5 - 9/17 x 3/5 + 8/17
X - 3/10 = 7/15 x 3/15
a: \(=\dfrac{3}{5}:\dfrac{7}{5}=\dfrac{3}{5}\cdot\dfrac{5}{7}=\dfrac{3}{7}\)
b: \(=\dfrac{9}{17}\left(\dfrac{8}{5}-\dfrac{3}{5}\right)+\dfrac{8}{17}\)
=9/17+8/17=1
c: =>x-3/10=7/15*1/5=7/75
=>x=7/75+3/10=59/150
5/9 x 8/17 + 4/9 x 8/17
Bài làm
\(\frac{5}{9}x\frac{8}{17}+\frac{4}{9}x\frac{8}{17}\)
\(=\frac{8}{17}x\left(\frac{5}{9}+\frac{4}{9}\right)\)
\(=\frac{8}{17}x\frac{9}{9}\)
\(=\frac{8}{17}x1\)
\(=\frac{18}{7}\)
# Chúc bạn học tốt #
\(\frac{5}{9}.\frac{8}{17}+\frac{4}{9}.\frac{8}{17}\)
\(=\frac{8}{17}\left(\frac{5}{9}+\frac{4}{9}\right)\)
\(=\frac{8}{17}.1=\frac{8}{17}\)
\(\frac{5}{9}\cdot\frac{8}{17}+\frac{4}{9}\cdot\frac{8}{17}\)
\(=\frac{8}{17}\cdot\left(\frac{5}{9}+\frac{4}{9}\right)\)
\(=\frac{8}{17}\cdot1\)
\(=\frac{8}{17}\)
tính bằng cách thuận tiện
7/17 x 5/8 + 6/17 x 3/8
Giúp tui bài lày huhu
Khoá quoá !
12345673524:264x668:3 =? (dư)
Câu 1: Tìm x:
a) 2/5× x = 8/7: x =4/5
Câu 2: Tính bằng cách thuận tiện nhất
5/9× 8/17 + 4/9 × 8/17
Câu 2:Đáp số là 8/17 nhé
(5/9+4/9)x8/17
=>1x8/17=8/17
Câu 1: Tìm x:
a) 2/5× x =(thiếu đề)
8/7: x =4/5
x=8/7:4/5
x=10/7
Câu 2: Tính bằng cách thuận tiện nhất
5/9× 8/17 + 4/9 × 8/17
=(5/9+4/9)x8/17
=1x8/17=8/17