You can put this solution on YOUR website! (4/5x + (4/5) = (2/21)x + (13/7) solve for x
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Multiply thru by 3*5*7 to get:
(21*4)x +(21*4) = (2*5)x + (13*35)
84x + 84 = 10x + 455
74x = 371
x = 371/74
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Cheers,
Stan H.