1) -1,6х*(-5у)=8ху
2)-7а-9d+а+11b=-6а-9d+11b
3)a-(-a-8)+(12+a)=a+a+8+12+a=3a+20
4)-3(c-5)+6(c+3)=-3c+15+6c+18=3c+33=3(c+11)
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
1) -1,6х*(-5у)=8ху
2)-7а-9d+а+11b=-6а-9d+11b
3)a-(-a-8)+(12+a)=a+a+8+12+a=3a+20
4)-3(c-5)+6(c+3)=-3c+15+6c+18=3c+33=3(c+11)