Find the sum of : -3 upon 8 and 18 upon 20 .
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Answer:
51/40 answer
Step-by-step explanation:
because 3/8 +18/20 lcm 40 3×5/8×5
18 ×2/20×2 = 15/ 10 = 36 /40 36 + 15 = 51
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