Answer:
x-19
Step-by-step explanation:
x-9-
x-10 =
x-
x-19
If you minus 9 and then minus 10, you are deducting 19 from the equation in total
x-
x-19 =
x-
x-19
You would want to make the denominator of the fractions the same by multiplying the first fraction by 2, and the second fraction by 3 so that both denominators are 6.
x-
x-19 =
x-19
Now that their denominators are the same, you can directly do the working for the numerators (4-3=1) and keep the denominator the same. Tada!