Which is the solution of the following system?
x-y=11
-x+y=-11

Anne is twice as old as bill, and bill is 3 years older than christie. the sum of anne s and christie s ages equal 72. find their age difference.?

Which statement about the relative areas of δabc and δxyz is true? the area of δabc > the area of δxyz the area of δabc < the area of δxyz the area of δabc = the area of δxyz more information is needed to compare.

Write 5(6x+4)-2(5x-2) in the form a(bx+c) where a, b and c integers and a> 1