1-2+3-4+5-6+7-8+9 trinh bay cach lam gium con voi
Tinh:
\(\frac{\frac{1}{3}-\frac{1}{4}+\frac{1}{5}}{\frac{7}{6}-\frac{7}{8}+\frac{7}{10}}\)
Giup minh trinh bay cach cach giai voi nhe
Ko hieu vao phan"Doc them"
\(\frac{\left(\frac{1}{3}-\frac{1}{4}+\frac{1}{5}\right)}{\frac{7}{2}\left(\frac{1}{3}-\frac{1}{4}+\frac{1}{5}\right)}\)=\(\frac{1}{\frac{7}{2}}\)=\(\frac{2}{7}\)
1 con chim gap 1 dan chim bay nguoc chieu,con chim do noi:chao tat ca 100 ban chim ạ.1 con chim o dan ben kia dap:chung toi ko phai co 100 con.chung toi cong voi 1/2 chinh chung toi cong voi 1/2 chinh chung toi cong voi 1/4 chinh chung toi cong voi chinh ban moi bang 100.hoi dan chim do co bao nhieu con,hay trinh bay cach lam
giải
gọi số chim cần tìm là x.
ta có: X+0,5X+0,5X +0,25X +1 =100
X x (1+ 0,5 + 0,5 + 0,25)= 100-1
2,25X = 99
X = 99:2,25=44
Đ/S:đàn chim đó có 44 con chim
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trinh bay cach tinh ra gium minh luon nhe
X.(-2)-9:(-3)=(2-7)2
trinh bay cach lam
\(x.\left(-2\right)-9:\left(-3\right)=\left(2-7\right)^2\)
\(x.\left(-2\right)-\left(-3\right)=\left(-5\right)^2\)
\(x.\left(-2\right)-\left(-3\right)=25\)
\(x.\left(-2\right)=22\)
\(x=-11\)
47-[(45.24-52.12):14
50-[(20-23):2+34]
102-[60:(56;54-3.5
TRINH BAY CACH GIAI GIUM MINH
62:9+50.2-33.3
32.5-100:4+23.5
32.5+23.10-81:3
trinh bay cach giai gium minh
238:236+51.32-72
151-291:288+12.3
trinh bay cach giai gium minh
a)238:236+51.32-72=4+5.9-49=4+45-49=0
b)151-291:288+12.3=151-8+1.3=151-8+3=146
Tick mình đầu tiên nhé bạn!
Tim x,biet:
(13.3x-2-3x):2=162 (Voi x ≥2)
Trinh bay cach lam ho minh voi nhe
Lam cho mik bai nay nha
(2x + 1 ) / 5 =( 4y -5 ) / 9 =( 2x + 4y - 4 ) / 7
Trinh bay voi nha neu dung thi mik tick