Question

I need help please?!!

Answer 1

A

Explanation:

When there a bracket it means multiple

Thus we know that when a negative multiple by a negative is gives you a positive ans

Thus

51-(-12)

=51+12

=63

Note:

Negative * negative = positive

Positive *negative =negative

Positive *positive = positive

Answer 2

A







Because 51 - (-12) is equal to 51+12