Question

17 1/4:3 12/19-7,25​

Answer 1

$17\frac{1}{4} :3\frac{12}{19} -7,25=\frac{69}{4} :\frac{69}{19} -7,25=\frac{69*19}{4*69} -7,25=\frac{19}{4} -7,25= 4,75-7,25 = -2,5$