(i) 7(x-2) = 2 (2x-4)
(ii) 21 – 3 (x-7) = x + 20
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Answer:
1. 7x-14=4x-8
7x-4x=-8+14
3x=6
x=2
2.18(x-7)=x+20
18x-136=x+20
18x-x=20+136
17x=156
x=156/17
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