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(ii) 2 (x+2) + 5x - 7 If x=2
= 4x+4 + 5x -7
=4×2+4 + 5×2 - 7
=8+4+10 - 7
=22 - 7
=15
(iii) 4 (2x-1) + 3x + 11
=8x-4 + 3x + 11
=8×2-4 + 3×2 + 11
=16-4 + 6 + 11
=12 + 6 + 11
=29
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