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OpenStudy (anonymous):
3x + 3 = 21
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OpenStudy (anonymous):
|dw:1349965709083:dw|
OpenStudy (anonymous):
6. if you replace x with 6, it would look like this: 3(6) + 3= 21. 3 times 6 is 18. 18 plus 3 is 21. :)
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