hayley6
hayley6
01-09-2016
Mathematics
contestada
two thirds a number plus 4 is 7
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ryannthompson
ryannthompson
01-09-2016
2/3x +4=7
-4 -4
3x2/3x=3x3
2x=9
2x/2=9/2
x=4.5
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how to solve 2(x+y)^2-9(x+y)-5
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