a. -90 -2 [5-2{28 - (25 - 29 - 7)}]
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Answer:6716
Step-by-step explanation:
-90-2[5-2{28-(25-29-7)}]
-90-2[5-2{28-(-11)}]
-90-2[5-2{28+11}]
-90-2[5-2{39}]
-90-2[5-78]
-92*-73= 6,716
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