Answer: To solve the equation "-5/8x + 10" for x when x equals -8, we can first substitute -8 for x in the equation:
-5/8(-8) + 10
Next, we can simplify the expression by performing the calculations within the parentheses:
-5/8(-8) + 10 = 5/8(8) + 10 = 5(8)/8 + 10 = 40/8 + 10 = 5 + 10 = 15
Therefore, the value of "-5/8x + 10" when x equals -8 is 15.