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\(\frac{5}{7}:x=\frac{2}{3}x\frac{3}{4}\)
\(\frac{5}{7}:x=\frac{1}{2}\)
\(x=\frac{5}{7}:\frac{1}{2}\)
\(x=\frac{10}{7}\)
a] 4/12 ; 5/12 ; 11/2 ; 1/4
b] 1 ; 9/12; 12/5 ; 11/3
c] 8/21; 6/11;8/7
d] 2/3 ;2/7 15/2
a]1/3 5/12 11/2 1/4
b]1 3/4 12/5 33/9
c]8/21 6/11 8/7
d]2/3 2/7 15/2
\(\frac{5}{2}\) + \(\frac{1}{4}\) x \(\frac{1}{8}\)
= \(\frac{5}{2}\) + \(\frac{1}{32}\)
= \(\frac{80}{32}\) + \(\frac{1}{32}\)
= \(\frac{81}{32}\)
\(\frac{4}{3}\) + \(\frac{1}{3}\) - \(\frac{1}{5}\)
= \(\frac{5}{3}\) - \(\frac{1}{5}\)
= \(\frac{25}{15}\) - \(\frac{3}{15}\)
= \(\frac{22}{15}\)
a)
=5/2+1/32
=80/32+1/32
=81/32
b)4/3+1/3-1/5
=5/3-1/5
=25/15-3/15
=22/15
1a) \(\frac{12}{17}+\frac{19}{17}+\frac{8}{17}\)
\(=\left(\frac{12}{17}+\frac{8}{17}\right)+\frac{19}{17}\)
\(=\frac{20}{17}+\frac{19}{17}\)
\(=\frac{39}{17}\)
b) \(\frac{2}{5}+\frac{7}{12}+\frac{13}{12}\)
\(=\frac{2}{5}+\frac{5}{3}\)
\(=\frac{31}{15}\)
2) \(\frac{25}{3}-x=\frac{5}{6}\)
\(x=\frac{25}{3}-\frac{5}{6}\)
\(x=\frac{45}{6}\)
ủng hộ tớ nha
2/5 : x = 1/3
x = 2/5 : 1/3
x = 6/5
**** nha
2/5:X=1/3
=>x=2/5:1/3
=>x=6/5