Math
plz solve No. 1 and 3
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1. 2/5 - 1/5 of 3/5 ÷ 3/5 - 1 1/5 + 1
= 2/5 - 3/25 × 5/3 - 6/5 + 1
= 2/5 - 1/5 - 6/5 + 1
= (2+5)/5 - (1+6)/5
= 7/5 - 7/5
= 0 (ans.)
3. 1/2 + 1/2 of 2 2/5 ÷ 4/5 × 1 1/3 - 1 1/4
= 1/2 + 1/2 of 12/5 × 5/4 × 4/3 - 5/4
= 1/2 + 12/10 × 5/3 - 5/4
= 1/2 + 2 - 5/4
= (1+4)/2 - 5/4
= 5/4 - 5/4
= 0 (ans.)
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