Question

i,j,k atât vă rog!!!!!!Cine vrea să-mi explice că nu prea le-am înțeles. :(

Answer 1

Răspuns:

$i)\frac{37}{8}\\ \\j)\frac{3}{8}\\ \\k)\frac{20}{3}$

Explicație pas cu pas:

$2\frac{25}{40}+3\frac{1}{7}*\frac{14}{11}=\frac{105}{40}+\frac{22}{7}*\frac{14}{11}\\ \\simplificam~22~cu~11~si~14~cu~7\\\\\frac{105}{40}+2=\frac{105}{40}+\frac{80}{40}=\frac{185}{40}=\frac{37}{8}$

$7\frac{3}{8}*\frac{1}{59} +\frac{1}{4}=\frac{59}{8}*\frac{1}{59}+\frac{1}{4}=\frac{1}{8}+\frac{1}{4}=\frac{1}{8}+\frac{2}{8}=\frac{3}{8}$

$3\frac{1}{6}*\frac{4}{19}+4\frac{1}{2}*\frac{4}{3}=\frac{19}{6}*\frac{4}{19}+\frac{9}{2}*\frac{4}{3}=\\ \\simplificam\\(19-19)(4-6)(9-3)(4-2)\\=\frac{2}{3}+6=\frac{2}{3}+\frac{18}{3}=\frac{20}{3}$