Question

a)(19/45:7/9):19/21
b)2(1/6+7/9)x18/17

Answer 1

A) =(19/45•9/7)•21/19=(19/5•1/7)•21/19=19/35•21/19=1/5•3=3/5=0,6
B) =2•3+14/18 •18/17=2•17/18•18/17=2