Question

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

x = 5, y = 3
x = 4, y = 5
x = 3, y = 2
x = 2, y = 5

Answer 1

The third answer is true

Answer 2

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 :)