Answer:
the answer is 4.857142857.
x= 17/28
Explanation:
6/7=x+2/8 (just do first 2/8)
6/7=x+1/4 (than change sides)
-x=1/4 - 6/7 (multiply fractions --> 1/4 * 7 and 6/7 * 4)
-x= - 17/28 /*(-x)
x=17/28
Hope this will help you:)
