add the like terms 2/3 x2y, -3/7x2y, 2/7x2y3
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Step-by-step explanation:
2/3×2y =4y/3
-3/7×2y=-6y/7
2/7×2y/3=4y/21
adding:
4y/3 - 6y/7 + 4y/21 =28y - 18y + 4y /7
=14y/7
=2y
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