Question

упростите выражение 55*74-74*50+50*70-70*45+45*66-66*40+40*62-62*35

Answer 1

74 * (55-50) +70*(50-45) + 66*(45-40) + 62 * (40-35)= 74 * 5 + 70 *5 + 66 *5 + 62 *5 = 
5 * (74 + 70 + 66 +62) = 5 * 272 = 1360