Bengalking85 Bengalking85
  • 13-12-2014
  • Mathematics
contestada

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

Respuesta :

ishawk
ishawk ishawk
  • 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 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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