Question

4*45+4*55+6*55+6*45 помогите решить

Answer 1

1000 удачи;) °•° ^_^ √™

Answer 2

1. 4×45=180 2.4×55=220 3.6×55= 330 4.6×45=270 5.180+220+330+270=1000

Answer 3

(55+45)*4+(55+45)*6=1000