OpalLeFay
OpalLeFay
12-04-2018
Mathematics
contestada
3x + 1 = x + 19
x = ?
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mjalimaris1227
mjalimaris1227
12-04-2018
3x+1=x+19
-1 -1
3x=x+18
-x -x
2x=18
/2 /2
x=9
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