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whats the answer for 5[21-(-67-69)]

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whats the answer for 5[21-(-67-69)]

whats the answer for 5[21-(-67-690]

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asked Sep 27, 2012 in Algebra 1 Answers by anonymous

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1 Answer

Problem: whats the answer for 5[21-(-67-69)]
whats the answer for 5[21-(-67-690]

There is no need for brackets; parentheses
can be nested.

5(21 - (-67 - 69))

Always start in the deepest nested parentheses.

5(21 - (-67 - 69))
5(21 - (-136))
5(21 + 136)
5(157)
785

answered Nov 16, 2015 by CWA Level 11 User (78.4k points)

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