If you multiply a number by 3 and then add 40, the result is the same as if you first add 17 and then multiply by 2. What is the result if you subtract 9 from the number and then multiply by 4?

A. -60
B. -72
C. -84
D. -108
E. -124

5 answers

3x + 40 = 2(x+17) = 2x + 34

x = -6

4(-6 -9) = ?
4( -15) = -60
Right.
Thank you very much PsyDAG.
108