5.a) 56,18+92,34+43,82=
57,10+43,82=
100,92
b)19,8•99-89•19,8=
19,8(99-89)=
19,8•10=
198
c)x+2 5/12=5 3/4
X+29/12=23/4
X=23/4-29/12
X=69/12-29/12
X=40/12
X=10/3
