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\(\frac{22}{5}\)\(:\)\(x\)\(=\)\(\frac{44}{5}\)\(:\)\(\frac{5}{2}\)
\(\frac{22}{5}\)\(:\)\(x\)\(=\)\(\frac{88}{25}\)
\(x\)\(=\)\(\frac{22}{5}\)\(:\)\(\frac{88}{25}\)
\(x\)\(=\)\(\frac{5}{4}\)
a) 4/9.x=25/18:2/3
4/9.x=25/18.3/2
4/9.x=75/36
x=75/36:4/9
x=75/36x4/9
x=675/144
b)x:4/5=25/8:5/4
x:4/5=25/8x4/5
x:4/5=100/40
x:4/5=5/2
x=5/2x4/5
x=20/10
x=2/1=2
c)22/5:x=44/5:5/2
22/5:x=44/5x2/5
22/5:x=88/25
x=88/25:22/5
x=88/25x22/5
x=440/550
x=4/5
h nk
\(\frac{22}{5}:x=\frac{44}{5}:\frac{5}{2}\)
\(\frac{22}{5}:x=\frac{44}{5}x\frac{2}{5}\)
\(\frac{22}{5}:x=\frac{88}{25}\)
\(x=\frac{22}{5}:\frac{88}{25}\)
\(x=\frac{22}{5}x\frac{25}{88}\)
\(x=\frac{5}{4}\)
a)\(\frac{22}{5}:x=\frac{44}{5}:\frac{5}{2}=\frac{44}{5}.\frac{2}{5}=\frac{84}{25}\)
\(\Rightarrow x=\frac{22}{5}:\frac{84}{25}=\frac{22}{5}.\frac{25}{84}=\frac{55}{42}\)
b) \(8,35x+6,65x=45\)
\(\Rightarrow\left(8,35+6,65\right)x=45\Rightarrow15x=45\)
\(\Rightarrow x=45:15=3\)
\(a,\frac{22}{5}\div x=\frac{44}{5}\div\frac{5}{2}\)
\(\Rightarrow\frac{22}{5}\div x=\frac{88}{25}\)
\(\Rightarrow x=\frac{5}{4}\)
\(b,8,35\times x+6,65\times x=45\)
\(\Rightarrow x\times\left(8,35+6,65\right)=45\)
\(\Rightarrow x\times15=45\)
\(\Rightarrow x=3\)
~Study well~
#Thạc_Trân
a: =13/26*9/18*2/3=2/3*1/4=2/12=1/6
b: =44/22*5/15*3/2=2*1/3*3/2=2*1/2=1
a) \(\frac{13}{18}\times\frac{9}{26}\times\frac{2}{3}=\left(\frac{13}{18}\times\frac{9}{26}\right)\times\frac{2}{3}=\frac{1}{4}\times\frac{2}{3}=\frac{1}{6}\)
b) \(\frac{44}{15}\times\frac{5}{22}\times\frac{3}{2}=\left(\frac{44}{15}\times\frac{5}{22}\right)\times\frac{3}{2}=\frac{2}{3}\times\frac{3}{2}=1\)
Đáp số : a) \(\frac{1}{6}\); b)1
a)13/18 x 9/26 x 2/3
=13/18*3/13*2/3
=(13/18*3/13)*2/3
=1/4*2/3
=1/6
b) 44/15 x 5/22 x 3/2
=(44/15*5/22)*3/2
=2/3*3/2
=1
a)
= 35,16 + 44,84 : 4 - 15,6
= 35,16 + 11,21 - 15,6
= 30,77
b)
= 45,65 x 73 + 22 x 45,65 + 45,65 x 5
= 45,65 x (73 + 22 + 5)
= 45,65 x 100
= 4565
Đã có 3 câu trả lời lận, sao còn lặp lại :/?
\(a,\frac{22}{5}\div x=\frac{44}{5}\div\frac{5}{2}\)
\(\Rightarrow\frac{22}{5}\div x=\frac{88}{25}\)
\(\Rightarrow x=\frac{5}{4}\)
~Study well~
#Thạc_Trân