Answer:
3149
Explanation:
800(4)-{3(5)•5(2)-7(27)}-y
800(4)-{3(5)•5(2)-7(27)} - 90
3200 -{15•10-189} - 90
3200 -{150-189} - 90
3200 -{-39} - 90
3200 + 39 - 90
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