5a-4b+6a+3b 7(5-y)+3(y-7)
Упростить вырожения
=11 а- b =35- 7y+3y-21=-4y+14
1) 5a+6a= =11a-4b+3b=11a-b 2) 35-7y+3y-21= =14-4y