Question 59306
-8-t=-25
8-8-t=8-25
-t=-17
-(-t)=-(-17)
{{{highlight(t=17)}}}
check by substituting 17 in for t and see if the sides are =.
-8-17=-25
-25=-25  We're right!!!
:

8=b-3+19
8=b+16
8-16=b+16-16
-8=b
{{{highlight(b=-8)}}}
Check:
8=(-8)-3+19
8=-11+19
8=8  We're right again!!!
:
{{{16=(8+s)/-7}}} 
{{{-7(16)=-7(8+s)/-7}}}
{{{-112=8+s}}}
{{{-112-8=-8+8+s}}}
{{{-120=s}}}
{{{highlight(s=-120)}}}
Check:
{{{16=(8+(-120))/-7)}}}
{{{16=-112/-7}}}
{{{16=16}}} Three for three!!!
   Happy Calculating!!!