Answer: J) 28
Step-by-step explanation: Triangle interior angles equal 180°
I hope it helps you a little
Number 2 is the correct answer
I don't like these computer choice thingies. It detracts from the math.


If we want to eliminate x we multiply the first equation by 5 then add it to the second:



OK, that's how it's done. Reading through the choices, that's choice D.