Answer:
-136
Step-by-step explanation:
Let the unknown number be written as x
2 more than the number is written as
x + 2
7/8 of the same number is written as 7/8x
15 less than that is written as
7/8x - 15
therefore
x + 2 = 7/8x - 15
collecting like terms
x - 7/8x = -15-2
1/8x = -17
x = -17*8/1
x = -136
