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Answer:
(I) x=3/28
(ii) x=45/14
Step-by-step explanation:
(I) (7x+2)/3=(14+15)/18
7x+2=(14x+15)/6
42x+12=14x+15
28x-3=0
28x=3
x=3/28
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(ii) 6.3x-0.84=9x
2.7x=0.84
x=270/84
x=90/28
x=45/14
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