Question

calcule e se possivel, simplifique o resultado:
1/6+1/7=
3/5+1/2-2/20=

Answer 1

$\frac{1}{6}+\frac{1}{7}=\frac{6+7}{42}=\frac{13}{42}$
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$\frac{3}{5}+\frac{1}{2}-\frac{2}{20}=\frac{12+10-2}{20}=\frac{20}{20}=1$

Answer 2

1/6 + 1/7 = 7+6/42 = 13/42

3/5 + 1/2 - 2/20 = 240+100-20/200

320/200 ==> 32/20 ==>16/10 ==> 8/5