Question 581290
-4(k-7)-(-5k-7)=8  get rid of parens
-4k+28+5k+7=8  collect like terms
-4k+5k+28+7=8
k+35=8  subtract 35 from each side
k=-35+8
k=-27
CK
-4(-27-7)-((-5*-27)-7)=8
-4*(-34)-(135-7)=8
136-128=8
8=8

Hope this helps---ptaylor