How do i solve this by elimination?
x/4 + y/6 =1
x-y=3

The price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?

I’ve been trying all day to figure this puzzle out. i need the work for it aswell. it is a factoring polynomials tarsia. the image is below.

If you prove that ∆wxz is congruent to ∆yzx, which general statement best describes what you have proved?