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Question

Evaluate: 30[26{15+(8¯¯¯¯¯¯¯¯¯¯¯¯63)}]×815÷49×3412+1 [4Mark]

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Solution

30[26{15+(8¯¯¯¯¯¯¯¯¯¯¯¯63)}]×815÷49×3412+1

=30[26{15+(83)}]×815÷49×3412+1...........[removing vinculum] ...(0.25 marks)

=30[26{15+5}]×815÷49×3412+1..................[removing small bracket] ...(0.25 marks)

=30[2620]×815÷49×3412+1..................[removing curly bracket] ...(0.5 marks)

=306×815÷49×3412+1..................[removing square bracket] ...(0.5 marks)

=306×65×3412+1.................. [division] ...(0.5 marks)

=30541012+1.................[multiplication] ...(0.5 marks)

=31541012...........[addition] ...(0.5 marks)

=31054510...................[subtraction] ...(0.5 marks)

=25.1 ...(0.5 marks)


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