() multiply 3 () plus 100 () divide 4 () minus 16 () plus 36 equals 60 There is another: () plus 504 () divided by 9 () multiplied by 50 equals 3850

() multiply 3 () plus 100 () divide 4 () minus 16 () plus 36 equals 60 There is another: () plus 504 () divided by 9 () multiplied by 50 equals 3850

(20) Multiply 3 = (60) plus 100 = (160) divided by 4 = (40) minus 16 = (24) plus 36 equals 60
Algorithm: from the back to the front, it is very simple
60-36=24
24+16=40
40×4=160
160-100=60
60÷3=20
(189) plus 504 = (693) divided by 9 = (77) = multiplied by 50 equals 3850
3850÷50=77
77×9=693
693-504=189

What's the number that adds 6, multiplies 6, subtracts 6, and the result is 36

What's the number that adds 6, multiplies 6, subtracts 6, and the result is 36
（36+6）÷6-6
=42÷6-6
=7-6
=1

Two two digit numbers add to 55 and subtract to 7

Subtracting two two digit numbers equals 7, which means that the larger number is larger than the smaller number by 7, and the sum of two numbers plus 7 is twice the larger number
（55+7）÷2=31
55-31=24
These two numbers are 31 and 24

The sum of sum, difference and quotient of a number and itself is 9.2, which is ()

（9.2-1）/2=4.1