Question

which one is right???
•PLEASE CHECK•

Answer 1

$a = - 1 \\ b = 3 \\ 5 - 2a + 3b + 42 - 1 \\ 5 - 2( - 1) + 3(3) + 42 - 1 \\ 5 + 2 + 9 + 41 \\ 7 + 50 \\ 57$

Answer 2

Refer the attached picture.