Answer:
Not following PEMDAS
Step-by-step explanation:
In the first one, they didn't follow PEMDAS. You have to add 3 and 12 because they're in parenthesis, so it would be:
4 x (3 + 12) =
4 x 15=
60
Second one:
4^2 - 2 x 3 + 6 =
16 - 2 x 3 + 6 =
16 - 6 + 6 =
10 + 6 =
16
divide i think or minus
option 2
36. a = 3 , b = 5, c = 1
