Question

Which of the following values for x and y make the equation 4x + 2y + 3 = 19 true?

Answer 1

Just substitute for x and y. 
1. 4(5) +2(3)+3=19 =
29=19 
2. 4(4)+ 2(5)+3=19 =
29=19
3. 4(3) +2(2) +3=19 =
19=19
4. 4(2) + 2(5)+3=19 =
21=19
 So the third one is correct :)

Answer 2

The third answer is true