45 * 889
15890*889/2=????
B=121-[2^4-(4^2+889)
B= 121-[16-(16+889)]
B= 121-[16-905]
B= 121+889
B= 1010
Giải:
\(B=121-\left[2^4-\left(4^2+889\right)\right]\)
\(\Leftrightarrow B=121-\left[16-\left(16+889\right)\right]\)
\(\Leftrightarrow B=121-16+16+889\)
\(\Leftrightarrow B=121+889\)
\(\Leftrightarrow B=1010\)
592 + 889 +111 : 2 x 1 = ?
tui ghi chia 2 chứ không ghi phần 2! ngốc ạ!
B=121-[2^4-(4^2+889)
\(B=121-\left[2^4-\left(4^2+889\right)\right]\)
\(\Rightarrow B=121-2^4+\left(4^2+889\right)\)
\(\Rightarrow B=121-2^4+4^2+889\)
\(\Rightarrow B=121-16+16+889\)
\(\Rightarrow B=121+889\)
\(\Rightarrow B=1010\)
\(B=121-\left[2^4-\left(4^2+889\right)\right]\)
\(\Rightarrow B=121-2^4+\left(4^2+889\right)\)
\(\Rightarrow B=121-2^4+4^2+889\)
\(\Rightarrow B=121-16+16+889\)
\(\Rightarrow B=121+889\)
\(\Rightarrow B=1010\)
1+99*111+889=?AI GIUP MIK NHÉ
1 + 99 * 111 + 889
= 1 + 10989 + 889
= 10990 + 889
= 11879.
Tính hợp lý ( - 1889 - 91)- ( - 889 + 91) + 182 ta được:
A. −2000
B. 2000
C. −1000
D. 1000
100+120+122+880-889+0+55*0=???????????????
100 + 120 + 122 + 880 - 889 + 0 + 55 x 0 = 0 nhé bạn
479+88+889+8*6+88/2+79*2+878=?
\(\left\{{}\begin{matrix}x+y=775\\1,18x+1,12y=889\end{matrix}\right.\)
\(\Leftrightarrow\left\{{}\begin{matrix}1.18x+1.18y=914.5\\1.18x+1.12y=889\end{matrix}\right.\Leftrightarrow\left\{{}\begin{matrix}y=425\\x=350\end{matrix}\right.\)