Question

8. The digits of a two-digit number differ by
3. If digits are interchanged and the resulting
number is added to the original number, we
get 121. Find the original number.
9. (x-2)/(x+1) = 13. Find x​

Answer 1

Answer:

8. =10(x+3) +x+10x+(x+3)=121

=10x+30+x+10x+3=121

=22x+33=121

=22x=121-33

=x=88/22

x=4

9.=(x-2)/(x+1)=13

=13(x+1)=1(x-2)

13x+13=x-2

13x-x=-2-13

12x=-15

x=-15/12

x=-5/4