oblicz. 6,25x5[latex] frac{3}{4} [/latex] 2[latex] frac{3}{7} [/latex]:2[latex] frac{1}{2} [/latex] 5,75:2[latex] frac{1}{3} [/latex]

1. 6 [latex] frac{1}{4} [/latex] x 5 [latex] frac{3}{4} [/latex] = [latex] frac{25}{4} [/latex] x [latex] frac{23}{4} [/latex] = [latex] frac{575}{8} [/latex] = 71 [latex] frac{7}{8} [/latex] 2. 17/7 x 2/5 = 34/35 3. 23/4 x 3/7 = 69/28 = 2 10/28