-6*(-1/7)= 1 2/5 : 2/7=

-6* -[latex] frac{1}{7} [/latex]= -[latex] frac{6}{1} [/latex] * (- [latex] frac{1}{7} [/latex] ) = [latex] frac{6}{7} [/latex] 1 [latex] frac{2}{5} [/latex] : [latex] frac{2}{7} [/latex] = [latex] frac{7}{5} [/latex] * [latex] frac{7}{2} [/latex] = [latex] frac{49}{10} [/latex]

a) -6*(-1/7)= -6/1*(-1/7)=6/7 b)1 i 2/5:2/7=9/7:2/7=9/5*7/2=49/10=4 i 9/10