Answer:
A
Explanation:
20÷2=10x3=30-3=27+4=31
Answer: B
1st ====> 3 x 3
2nd ===> 20 / 2
3rd ===> 3x3 = 9 *** 9 + 4
4th ===> 20/2 = 10 *** 10 - 2
Multiplication, division, addition subtraction
P - parathesis
E - exponent
M - multiplication
D - division
A - addition
S - subtraction
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