a) 1 + 2 x 0 + 19 x 0
= 1 + 0 x (2 + 19)
= 1 + 0 x 21
= 1 + 0
= 1
b) 1246 : 2 + 1643
= 623 + 1643
= 2266
a)1+2x0+19x0
= 1 + 0 + 0
= 1
b)1246:2+1643
= 623 + 1643
= 2266
a) 1 + 2 x 0 + 19 x 0
= 1 + 0 + 0
= 1
b) 1246 : 2 + 1643
= 623 + 1643
= 2266
a)1+2×0+19×0
=1+0+0
=0
b)1246:2+1643
=623+1643
=2266