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2(a) 2/3 + 1/6
=change denominator to same first
= 2/3 × 2 = 4/6+1/6
=5/6
(b) 3/10+7/30
=3/10×3=9/30
=9/30+7/30
16/30(can be simplified and written as 8/15)
(c) 7/16+3/8
=3/8×2 = 6/16+7/16
=13/16
(d) 9/20+2/5
=2/5×4= 8/20
=8/20+9/20
=17/20
Should I explain other questions too??if so, I can help..
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