Solve the system of equations x + y = 12 and x + 7y = -20 by combining the
equations.

You have 3 boxes, one "strawberries"; one "mentos" and one "mixed".but you know that all the labels are in incorrect order .how do you know witch is witch?

Need on this geometry question. explain how you did it.

Simplify 15(x - 4)(x -1)-3(x + 4)(x - 1) with steps