a) – 7 + [2 - {(-4) + 3 - (3 x 5+1 - 3 x 3)}]
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Answer:
3
Explanation:
– 7 + [2 - {(-4) + 3 - (3 x 5+1 - 3 x 3)}]
-7+[2-{(-4)+3 -(15+1-9)}]
-7+[2- {(-4)+3 -(16-9)}]
-7+[2-{(-4)+3-(7)}]
-7+[2-{-4+3-7}]
-7+[2-{-1-7}]
-7+[2-{-8}]
-7+[2+8]
-7+[10]
-7+10
3
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