+99 Can someone please help me on this math problem
Given px+qy+rz=1,p+qx+ry=z,pz+q+rx=y,py+qz+r=x,p+q+r=−3,FIND x+y+z
+118703 This question is easy.
Add the first 4 equations together
sum of left = sum of right
you will have
p( ...) +q(...) +r( ...) = (...)
factorize and take it from there
+99 SO would that simplify to p(x+y+z)+q(x+y+z)+r(x+y+z)=1+x+y+z
