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

asked Jan 10, 2015 135k views

1 vote

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

Inshallah answered Jan 12, 2015

8.2k points

2 votes

2*(3+6)=12 (2*2)*5=20 (3*4)*7=21 1+(5*6)=31

Jenneh answered Jan 15, 2015

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