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a, \(y-\frac{1}{6}=\frac{5}{6}\)
\(y=\frac{5}{6}+\frac{1}{6}\)
\(y=1\)
b, 1295.23-16839
=29785-16839
=12946
_HT_
1.
a) \(\frac{16}{24}-\frac{1}{3}=\frac{16}{24}-\frac{8}{24}=\)\(\frac{8}{24}=\frac{1}{3}\)
b) \(\frac{4}{5}-\frac{12}{60}=\frac{48}{60}-\frac{12}{60}=\frac{36}{60}=\frac{9}{15}\)
3.
a)\(\frac{17}{6}-\frac{2}{6}=\frac{17-2}{6}=\frac{15}{6}\)
b) \(\frac{16}{15}-\frac{11}{15}=\frac{16-11}{15}=\frac{5}{15}=\frac{1}{3}\)
c) \(\frac{19}{12}-\frac{13}{12}=\frac{19-13}{12}=\frac{6}{12}=\frac{1}{2}\)
a) \(\frac{2}{5}+\frac{9}{15}=\frac{2}{5}+\frac{3}{5}=\frac{5}{5}=1\)
b) \(\frac{15}{45}+\frac{25}{30}=\frac{1}{3}+\frac{5}{6}=\frac{2}{6}+\frac{5}{6}=\frac{7}{6}\)
c) \(\frac{28}{32}+\frac{45}{72}=\frac{7}{8}+\frac{5}{8}=\frac{12}{8}=\frac{3}{2}\)
d) \(\frac{8}{28}+\frac{5}{30}=\frac{2}{7}+\frac{1}{6}=\frac{12}{42}+\frac{7}{42}=\frac{19}{42}\)
a) \(\frac{2}{5}+\frac{9}{15}\)=\(\frac{2}{5}+\frac{3}{5}=\frac{2+3}{5}=1\)
b)\(\frac{15}{45}+\frac{25}{30}=\frac{1}{3}+\frac{5}{6}=\frac{2}{6}+\frac{5}{6}=\frac{2+5}{6}=\frac{7}{6}\)
c)\(\frac{28}{32}+\frac{45}{72}=\frac{7}{8}+\frac{5}{8}=\frac{7+5}{8}=\frac{12}{8}=\frac{3}{2}\)
d)\(\frac{8}{28}+\frac{5}{30}=\frac{2}{7}+\frac{1}{6}=\frac{12}{42}+\frac{7}{42}=\frac{12+7}{42}=\frac{19}{42}\)
a) 5/4 + 3/4= 8/4=2
b)5/6+1/6=6/6=1
ai tk mình tk lại cho nha!!!!
a)\(\frac{5}{4}+\frac{12}{16}=\frac{5}{4}+\frac{3}{4}=\frac{8}{4}=2\)
b)\(\frac{5}{6}+\frac{4}{24}=\frac{5}{6}+\frac{1}{6}=\frac{6}{6}=1\)
K mk nha
a.6/8 * 7/6
=6*7/8*6
=42/48
=21/24(rut gọn)
=7/8(rút gọn)
b.6*7/9
=6*7/9
=42/9
=14/3(rút gọn)
c.4/6 : 8/2
=4/6 * 2/8
=4*2/6*8
=8/48
=4/12=2/6=1/3(rut gọn)
Đúng thì k cho mình nha
a)\(\frac{6}{8}\times\frac{7}{6}=\frac{6\times7}{8\times6}=\frac{42}{48}=\frac{7}{8}\)
b)\(6\times\frac{7}{9}=\frac{6}{1}\times\frac{7}{9}=\frac{6\times7}{1\times9}=\frac{42}{9}=\frac{14}{3}\)
c)\(\frac{4}{6}\div\frac{8}{2}=\frac{4}{6}\times\frac{2}{8}=\frac{4\times2}{6\times8}=\frac{8}{48}=\frac{1}{6}\)
#Học tốt!!!
~NTTH~
a. 450 370 + 6 025
+ 450370 6025 456395
b. 546 327 – 30 839
− 546327 30839 515488