Question

упростите
5+3(2y-7)
15a-(3a-11)+(5-12a)
(3m-4n )+(5m+3n)+n -7m

Answer 1

5+3(2Y-7)=5+6Y-21=6Y-16
15A-(3A-11)+(5-12A)=15a-3a+11+5-12a=16
(3m-4n)+(5m+3n)+n-7m= 3m-4n+5m+3n+n-7m=m

Answer 2

1)5+6у-21=6у-16 2)15а-3а+11+5-12а= 16 3) 3m - 4n +5m +3n+n-7m= m