What is this math problem?
3x = 6y - 21
6x - 9y = -30

Use the net as an aid to compute the surface area of the triangular prism. a) 550 m2 b) 614 m2 c) 670 m2 d) 790 m2

Can some one explain how to slove specifically, what is the value of x? 0.9(x+1.4)-2.3+0.1x=1.6 enter the answer as a decimal in the box. x= ?

5x−4≥12 or 12x+5≤−4 can you with this problem