3x+2
3(x+8)
5(x+3)+8
eight
Their sum is three times the middle number.
3(x=12)
3x+2
-5 what is the sum of negative eight and three?
3(x+8)
5(x+3)+8
six times the sum of eight and eight 6*(8+8) = 96add eight to eight and multiply the result by six.
11
eight
9x+10
803
Their sum is three times the middle number.
x + 8 < 144