Answer:
x = ⅔
Step-by-step explanation: 1. Subtract the numbers = 7 + x-15 = -22/3, -8 + x = -22/3. 2. Add the same term to both sides of the equation = -8 + x = - 22/3, -8 + x + 8 = - 22/3 + 8. 3. Simplify = Add the numbers, Add the numbers again, and x = 2/3