Question

Помогите пожалуйста с математикой

Answer 1

1)3x+y-x+4y=2x+5y
2)x+6y-8x+y=-7x+7y
3)m+n+m-n=2m
4)6m+5-m+1=5m+6
5)2x+y-x-y=x
6)2m-3n+2m+3n=4m

Answer 2

1) (3x+y)-(x-4y)=3x+y-x+4y=2x+5y;
2) (x+6y)-(8x-y)=x+6y-8x+y=-7x-7y;
3) (m+n)+(m-n)=m+n+m-n=2m;
4) (6m+5)-(m-1)=6m+5-m+1=5m+6;
5) (2x+y)-(x+y)=2x+y-x-y=x;
6) (2m-3n)+(2m+3n)=2m-3n+2m+3n=4m.