l2at8aykelsen
l2at8aykelsen
23-09-2016
Mathematics
contestada
two times a number plus 6 equals 20
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Sherylsofavored
Sherylsofavored
23-09-2016
The answer is seven, 7+7=14+6+20
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samgoddard
samgoddard
23-09-2016
First subtract 6 from 20, then you can deduce what the other number is. Seven times two is 14, so we know the missing number is 7.
You could also write it as the algebraic expression 2x + 6 = 20
2x+6=20
-6 -6
2x=14
14/2=7
x = 7
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