a)

\(25+|x-1|=\left(-15\right)+76\)

\(\Rightarrow25+|x-1|=61\)

\(\Rightarrow|x-1|=61-25\)

\(\Rightarrow|x-1|=36\)

\(\Rightarrow\orbr{\begin{cases}x-1=36\\x-1=-36\end{cases}}\)

\(\Rightarrow\orbr{\begin{cases}x=36+1\\x=-36+1\end{cases}}\)

\(\Rightarrow\orbr{\begin{cases}x=37\\x=-35\end{cases}}\)

Vậy \(x=37\) hoặc  \(x=-35\)

a, 25 + / x - 1 / = ( - 15 ) + 76

25 + / x - 1 / = 61

/ x - 1 / = 61 - 25

Tự tính nốt

1/3x + 3/4x - 75% = -5 1/4

=> x - 3/4 = -21/4

=> x = -21/4 + 3/4

=> x = -9/2

60%x + 5/6x = -76

=> 3/5x + 5/6x = -76

=> 43/30x = -76

=> x = -76 : 43/30

=> x = -2280/43

\(\frac{1}{3}x+\frac{3}{4}x-75\%=-5\frac{1}{4}\)

\(\frac{13}{12}x-\frac{3}{4}=-\frac{21}{4}\)

\(\frac{13}{12}x=-\frac{9}{2}\)

\(x=-\frac{54}{13}\)

\(60\%.x+\frac{2}{3}x=-76\)

\(\frac{3}{5}x+\frac{2}{3}x=-76\)

\(\frac{19}{15}x=-76\)

\(x=-60\)

Áp dụng tính chất \(\frac{a}{b}< 1\Rightarrow\frac{a}{b}< \frac{a+m}{b+m}\left(m\ne0;m\in N\right)\)

Ta có: \(D=\frac{10^{76}+1}{10^{77}+1}< \frac{10^{76}+1+9}{10^{77}+1+9}=\frac{10^{76}+10}{10^{77}+10}=\frac{10.\left(10^{75}+1\right)}{10.\left(10^{76}+1\right)}=\frac{10^{75}+1}{10^{76}+1}=C\)

\(\Rightarrow D< C\)

2.2.50.76.5

= (2.50).(2.5).76

= 100.10.76

= 1000.76

= 76000

Hôm nay tôi dọn song 🎵 Chào bán hàng tháng lên cho ♥️ Chào bán hàng xóm Chào bán hàng xóm

a) -1,6: (1+2/3)-76/25 =

-1,6:5/3-76/25=

-24/25-76/25=-100/25=-4

b) -3+1/5 . 5/64 + (0,8-(2+4/15)) : 11/3=

-16/5.5/64+(12/15-34/15):11/3=

-1/4+(-22/15):11/3=

-1/4+(-2/5)=

3/20

tick cho mình nha các bạn

hi

\(\frac{2^{76}-2^{74}}{2^{78}-2^{76}}=\frac{2^{74}\left(2^2-1\right)}{2^{74}\left(2^4-2^2\right)}=\frac{4-1}{16-4}=\frac{1}{4}\)

\(1+\frac{1}{11}=\frac{12}{11}\)

\(1+\frac{1}{12}=\frac{13}{12}\)

\(1+\frac{1}{13}=\frac{14}{13}\)

\(1+\frac{1}{14}=\frac{15}{14}\)

\(1+\frac{1}{15}=\frac{16}{15}\)

\(1+\frac{1}{16}=\frac{17}{16}\)

\(\left(1+\frac{1}{11}\right)\left(1+\frac{1}{12}\right)...\left(1+\frac{1}{16}\right)=\frac{12.13.14.15.16.17}{11.12.13.14.15.16}=\frac{17}{11}\)