Verified answer

Answer:

26_63 26 62 62 62733 7373

Step-by-step explanation:

a) 1+1÷{1+1÷(1+1/3)}

1+1÷{1+1÷1.3}

1+1÷{1+1÷1.3}

1+1÷{1+0.76923076923}

1+1÷1.76923076923

1+0.5652173913

1.5652173913

b) 1/2÷1/2 of 1/2+1/2

1 x 1/2+1/2

1/2+ 1/2

1

c) 100-[72÷(2 of 4)-{20-(15-3)}]

100-[72÷8-{20-12}]

100-[72÷ 8-8]

100-[9-8]

100-1

99

d)(-10)-[(-5)-{-11-(8-bar 10-2)}]​

(-10)-[(-5)-{-11-(0.8 x 10-2)}]​

(-10)-[(-5)-{-11-6)}]​

(-10)-[(-5)- (-17)}]​

(-10)-12

-22

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