Question 1080155
Assume that Student 2 completed 'x' homework questions.
So, Student 1 completed (6x+2) homework questions.

Together, they solved 51 questions.
So, x+(6x+2)=51
    7x+2=51
    7x=51-2
    7x=49
    x=49/7
    x=7
So, Student 2 completed 7 questions.
    Student 1 completed (6x+2)= {(6*7)+2} 
                              =42+2
                              =44 questions.