14 thousands,58 tens, 17 ones in standard form

In other words, x is some number such that

7/11 - x/3 = 24/55

Solve for x. Rewrite each fraction using a common denominator. In this case, it would be lcm(3, 11, 55) = 3×5×11 = 165. Then

7/11 = (7×15)/(11×15) = 105/165

x/3 = (x×55)/(3×55) = 55x/165

24/55 = (24×3)/(55×3) = 72/165

So we have

105/165 - 55x/165 = 72/165

(105 - 55x)/165 = 72/165

105 - 55x = 72

-55x = -33

x = (-33)/(-55) = (3×11)/(5×11) = 3/5