26-|x+9|=-13
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
26*8+2*2*13-10*26
=26*8+2*26-10*26
=26*(8+2-10)
=26*0
=0
Nhớ tick mik nha
a: \(\left|x-7\right|+13=25\)
=>|x-7|=12
=>x-7=12 hoặc x-7=-12
=>x=19 hoặc x=-5
b: 26-|x+9|=-13
=>|x+9|=39
=>x+9=39 hoặc x+9=-39
=>x=30 hoặc x=-48
\(\dfrac{5}{13}\) \(\times\) \(\dfrac{9}{14}\) \(\times\) \(\dfrac{28}{27}\) \(\times\) \(\dfrac{26}{35}\)
= \(\dfrac{5}{13}\) \(\times\) \(\dfrac{9}{14}\) \(\times\) \(\dfrac{14\times2}{9\times3}\) \(\times\) \(\dfrac{13\times2}{5\times7}\)
= \(\dfrac{5\times9\times14\times13}{5\times9\times14\times13}\) \(\times\) \(\dfrac{2\times2}{3\times7}\)
= 1 \(\times\) \(\dfrac{4}{21}\)
= \(\dfrac{4}{21}\)
26-3.|x+9| =-13
3.|x+9|=26-(-13)
3.|x+9|=39
|x+9|=39:3
|x+9|=13
--> x+9=13 hoặc x+9= (-13)
x=13-9 x=(-13)-9
x=4 x=(-22)
Vậy x thuộc {4;-22}
26-3.|x+9|=-13
3.|x+9|=26-(-13)
3.|x+9|=39
|x+9|=39:3
|x+9|=13
* x+9=13 * x+9=-13
x=13-9 x=-13-9
x=4 x=-22
Vậy x=4 hoặc x=-22
a) \(13.\left(7-x\right)=26\)
\(7-x=26:13\)
\(7-x=2\)
\(x=7-2\)
\(x=5\)
b() \(5.\left(x-9\right)=15\)
\(x-9=15:5\)
\(x-9=3\)
\(x=3+9\)
\(x=12\)
\(13X\left(7-x\right)=16\)
\(=>7-x=\frac{16}{13}\)
\(=>x=7-\frac{16}{13}\)
\(=>x=\frac{75}{13}\)
\(5X\left(x-9\right)=15\)
\(=>x-9=3\)
\(=>x=9+3\)
\(=>x=12\)
\(\dfrac{14\times9}{21\times3}=\dfrac{2\times7\times3\times3}{3\times7\times3}=2.\\ \dfrac{15\times26\times8}{45\times13\times16}=\dfrac{3\times5\times2\times13\times2\times2\times2}{5\times3\times3\times13\times2\times2\times2\times2}=\dfrac{1}{3}.\)
a: \(=\dfrac{126}{63}=2\)
b: \(=\dfrac{15\cdot16\cdot13}{15\cdot3\cdot13\cdot16}=\dfrac{1}{3}\)
\(26-\left|x+9\right|=-13\)
\(\left|x+9\right|=26-\left(-13\right)\)
\(\left|x+9\right|=39\Rightarrow\orbr{\begin{cases}x+9=39\\x+9=-39\end{cases}}\)
\(\Rightarrow\orbr{\begin{cases}x=39-9\\x=-39-9\end{cases}}\)
\(\Rightarrow\orbr{\begin{cases}x=30\\x=-48\end{cases}}\)
Vay ...
26-[x+9]=13
= 26-13-9
=4