Question

Please help and show work!!

Answer 1

we are given

$y-7=-(x+1)$

Firstly, we will distribute negative sign on right side

$y-7=-x-1$

Since, we have to move both x and y on anyone side

so, we will add x on both sides

$y-7+x=-x-1+x$

$y-7+x=-1$

now, we add 7 on both sides

$y-7+x+7=-1+7$

$y+x=6$

$x+y=6$.................Answer