4x + 10y
Hope it’s right
Best luck with your studying
It’s 12 DIVIDE (7-4)+5 TIMES 3=19
The answer is the option d, which is: d) 
The explanation for this problem is shown below:
1. Smplify the denominator and rewrite the numerator in this form:

2. Multiply the denominator and the numerator by the conjugated
and simplify the expression, as following:

3. As you can see, you obtain the expression shown in the option mentioned above.