Question

if '+' = ÷ , '÷' = '-' , '-' = '×' , '×' = '+' then 10+5÷7-4×30 = ?

Answer 1

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SINCE,

+ = ÷
÷ = -
- = ×
× = +

so,

10 + 5 ÷ 7 - 4 × 30 , can be written as :-

10 ÷ 5 - 7 × 4 + 30

= 2 - 14 + 30

= 4 ... ANSWER

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