Bengalking85 Bengalking85

13-12-2014
Mathematics

Answered

I need some simple equations that equal 12,20,21,31.

Verified Answer :

13-12-2014

2(3+6)=12 (22)5=20 (34)7=21 1+(56)=31

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bayjo98241 bayjo98241

13-12-2014

(3 • 2) • 2 = 12, (3 • 7) - 1 = 20, (3 • 2) + (3 • 5) = 21, (6 • 5) +1 = 31

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