The value of the given expression is
[[6×{(−6)×(−5)}]÷{28+(−14−5)}]
+[{28×(−3)}÷(−2−2)]
+[{(−4)×(−4)×6}÷(−4)]]
[[6×{(−6)×(−5)}]÷{28+(−14−5)}]
+[{28×(−3)}÷(−2−2)]
+[{(−4)×(−4)×6}÷(−4)]]
=[[6×{(30)}]÷{28+(−19)}]
+[{−84}÷(−4)]
+[{16×6}÷(−4)]]
=[[180]÷{9}]
+[21]
+[{96}÷(−4)]
=[20]+[21]+[−24]
=41−24
=17