-3(x+2)=15
use the distributive property and multiply
you then get
-3x - 6 = 15
add 6 to both sides to cancel out the -6
you get -3x = 21
divide 21 by -3
you get x = 7
but that's only the first part, since you now have x, plug in the value (7) for x
2(7)-1
multiply 2 times 7 and you get
14 -1
your final answer:
13
