Question

tính bang cach thuan tien nhat

198 x 27 + 198 x 72 + 198

Answer 1

198×27+198×72+198

=198×27+198×72+198×1

=198×(27+72+1)

=198×100

=19800

Answer 2

=198x(27+72+1)

=198x100=19800

vậy..............

k mình nha