place brackets in these statements to make it true please

a.  (5 + (-3))*(3 + 4) → 2*7 → 14

b.  5 + ((-3)*3 + 4*2) → 5 + (-9 + 8) → 5 + (-1) → 4

c.  (5 - 5)*6 + (7*6) - 5 → 0*6 + 42 - 5 → 0 + 42 - 5 → 37