7. Simplify: (i) 1¾ × 2⅖×whole number 4by7
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Step-by-step explanation:
1 3/4 × 2 2/5
= 4×1+3 × 5×2+2
4 5
= 7 × 12
4 5
= LCM of 4and 5 = 20
= 7 ×5 = 35
4×5= 20
= 12×4 = 48
5×4 20
Therefore:
35 × 48
20
1680
20
84 × 28
= 2352
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