Bengalking85 Bengalking85

13-12-2014
Mathematics

contestada

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

Respuesta :

13-12-2014

2*(3+6)=12 (2*2)*5=20 (3*4)*7=21 1+(5*6)=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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