6/7+9/8:9/1-3/16.2/1
6/7+9/8.1/9-3/16.2/1
6/7+1/8-3/8
48/56+7/56-21/56
17/28
3/11.[(7/12+-19/12)+(15/38+23/38)]
3/11.[-1+1]
3/11.0
0
\(\frac{6}{7}+\frac{9}{8}:9-\frac{3}{16}.2\)
\(=\frac{6}{7}+\frac{9}{8}.\frac{1}{9}-\frac{3}{8}\)
\(=\frac{6}{7}+\frac{1}{8}-\frac{3}{8}\)
\(=\frac{17}{28}\)
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\(\frac{3}{11}.\frac{7}{12}+\frac{15}{38}+\frac{3}{11}.\frac{-19}{12}+\frac{23}{38}\)
\(=\frac{3}{11}.\left(\frac{7}{12}+-\frac{19}{12}\right)+\left(\frac{15}{38}+\frac{23}{38}\right)\)
\(=\frac{3}{11}.\left(-1\right)+1\)
\(=-\frac{3}{11}+1\)
\(=\frac{8}{11}\)
