\(\left(\frac{5}{7}-y\right)\cdot\frac{14}{5}=\frac{7}{10}+\frac{1}{2}=\left(\frac{5}{7}-y\right)\cdot\frac{14}{5}=\left(\frac{5}{7}-y\right)\cdot\frac{14}{5}=\frac{6}{5}\)\(\frac{6}{5}\)
\(=>\frac{5}{7}-y=\frac{6}{5}\) / \(\frac{14}{5}=\frac{5}{7}-y=\frac{3}{7}=\frac{5}{7}-\frac{3}{7}=\frac{2}{7}\)
\(=>y=\frac{2}{7}\)
tìm y biết: ( 5/7 - y ) * 14/5 = 7/10 + 1/2
(5/7-y)*14/5=7/10+1/2
CHÚ Ý * LÀ NHÂN
( 5/7 - y ) * 14/5 = 7/10 + 1/2
Ai nhanh mình tick
Tìm y biết:(\(\frac{5}{7}-y\)) x \(\frac{14}{5}=\frac{7}{10}+\frac{1}{2}\)
(5/7-y0*14/5=7/10+1/2
(5/7 - x ) x 14/5 = 7/10+1/2
thực hiện phép tính
1/2+3/5+2/6
7/5+1/7+14/10+1
3/7+1/5+1/7+2/10+2
15/27+1/9+3/5+2/18
Bài 4: Tìm y
a) 100-9:(372:3.y-1)-14=83
b) 7260-120:24.y+924=528.3
c) 2000-52:(615:3:y-15)-14=1984
d) y+y.1/3+5/18=7/18
e) 13/15-(5/21+y).7/12=7/10
h) y+2.y+3.y+4.y+...+10.y=49,5
i) y.(1975/8.9+1885/9.10+1755/10.11+1579/11.12+6=1/24
3 x ( 1/7 + 1/3 - 3/14 ) : 11/14
( 8/5 + 11/5 ) x 11/10 + ( 17/10 - 4/5) : 3/7
