Question

А)2a-3b-5a +7d б)4*(3x-y)-5*(x+y)

Answer 1

а)2а-3b-5a+7d=-3a-3b+7d
б)4*(3х-у)-5*(х+у)=12х-4у-5х-5у=7х-9у

Answer 2

а) 2a-3b-5a+7d=-3a-3b+7d= -3(a+b)+7d
b) 4*(3x-y)-5*(x+y)= 12x-4y-5x-5y= 7x-9y