1.)which of the following is true?

a. x+8/× = 8
b. x²+7 = x²+1
c. 5x+7/5x+11 = 7/11
d. the expression -5x - 10/x+2 reduces to the consecutive integer that follows -4

2.) which of the following is true?

a. 10x/10 = x, for any real number x
b. x²-25/x-5 = x-5, if x is not equal to 5
c. x-6/x-6 = -1, if x is not equal to -6
d. we cannot replace x by -3 or 6 in the rational expression ×+3/x-6

solution please

​