Simplify the expression.
O.O

Answer:
x raise to 6/7
Step-by-step explanation:
since the base of both the numbers on the numerator is same,
4/7 + 3/7 = 7/7
so, x raise to 7/7
then since the base is same for the numerator and denominator,
7/7-1/7= 6/7
so x raise to 6/7