Please help me show work if you can please

Answer:
7.) IDK, sorry
8.) 17/10
Write 1.7 as 1.7 /1
Multiply both numerator and denominator by 10 for every number after the decimal point 1.7 × 10 /1 × 10 = 17 /10
Reducing the fraction gives
17 /10
9.) IDK, sorry
10.)
1) X = 0.333333….
2) 10X = 3.333333…. (Find a number of ten that will get rid of the repeating end of the decimal. Then subtract Step 1 and Step 2.)
3) 9X = 3
4) 9X/9 = 3/9 or 1/3