Tran To Dieu Linh
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2024-10-22 07:43:31
\(\dfrac{5}{4}-\left(\dfrac{1}{2}\right)^2=\dfrac{5}{4}-\dfrac{1}{4}=\dfrac{4}{4}=1\)
\(\dfrac{2}{3}.-\dfrac{3}{2}+-\dfrac{7}{2}.\dfrac{2}{3}=-1+-\dfrac{7}{3}=-\dfrac{3}{3}+-\dfrac{7}{3}=-\dfrac{4}{3}\)
(1/5+4/13)+(-2/5+7/13)-(4/5-2/13)=1/5+4/13+(-2/5)+7/13-4/5-2/13=(1/5+-2/5+4/5)+(4/13+7/13-2/13)=3/5+9/13=39/65+27/65=66/65