The following equation is incorrect. Which two signs should be interchanged to correct the equation?
4 - 10 ÷ 5 x 4 + 12 = 16
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13 - 14 ÷ 30 x 7 + 15 = 13
7 x 16 + 20 - 20 ÷ 10 = 31
In a certain code language , 'PROBLEM' is written as MPERLOB. How will 'PROBLEM' is written as MPERLOB. How will 'NUMBERS' be written in that code?
123456PROBLE7M⇒716253MPERLO4B
Similarly, 123456NUMBER7S⇒716253SNRUEM4B
9 ÷ 3 - 30 x 7 + 6 = 15
10 ÷ 18 + 25 x 20 - 5 = 92
20 + 14 ÷ 35 - 10 x 12 = 10
90 ÷ 10 + 5 - 6 x 4 = 28