Question

9у-5,96+7,11 при у=1,2

12,654х-4,39у-0,064 при у=0,4

Answer 1

9у-5,96+7,11=10,8-5,96+7,11=11,95

12,654х-4,39у-0,064=12,654х-1,756-0,064=12,654х-1,82