which pairs are solutions to the equation?
3xy + 9 = 33
a.
(8, 1) and (2, 6)
b.
(1, 11) and (2, 6)
c.
(1, 8) and (8, 1)
d.
(1, 8) and (1, 11)

3xy+9=33

A. 3*8*1+9=33; 3*2*6+9=45

(A. is not your answer)

B. 3*1*11+9=42; 3*2*6+9=45

(B. is not your answer)

C. 3*1*8+9=33; 3*8*1+9=33

(c. is your answer)

D. 3*1*8+9=33; 3*1*11+9=42

Your final answer, If that is confusing, is C. (1,8) and (8,1)

where are the choices?

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!