Solve for x

X+8/5=10-x and

Simplify

3(y+7)^5/(y+7)^4

Offering 30 if a plus b plus c equals 68 and ab plus bc plus ca equals 1121, where a, b, and c are all prime numbers, find the value of abc. the answer is 1978 but i need an explanation on how to get that.

1yd 1 ft = 1 1/12 1 1/3 1 1/2 1 1/6

Solve -.016x= -16. need solving this