3x+y=13
5x-2y=7
please show steps

With #! i’ve tried to figure it out but i can’t.

As a salesperson you get $50/day and $3.60/each sales you make.if you want to make $60 in one day, how many sales would you need need to make ? a 3b 4c 5d 6 show work.

How do i simply this radical expression?