4x-7+7x=3x-1hurry for crutal test.

Factor -8x3-2x2-12x-3 by grouping what is the resulting expression?

Solve the system of equations y= 3/2 - 1, -x+ y =-3

Three numbers x, y, and z are in the ratio 2: 7: 8. if 12 is subtracted from y, then three numbers form a geometric sequence (in the order x, y–12, z). find x, y, and z. there are 2 sets.