Question

5(9-2m)+10m
-5a+8(1+3a)
-9c-7(1-2c)
помогите срочноо

Answer 1

1)5(9-2m)+10m=45-10m+10m=45
2)-5a+8(1+3a)=-5a+8+24a=8+19a
3)-9c-7(1-2c)=-9c-7+14c=-7+5c