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Question

Find:
$$\cfrac{-3}{8}-\cfrac{7}{11}$$


Solution

$$\cfrac { -3 }{ 8 } -\cfrac { 7 }{ 11 } =\cfrac { -3\times 11 }{ 8\times 11 } -\cfrac { 7\times 8 }{ 11\times 8 } =\cfrac { -33 }{ 88 } -\cfrac { 56 }{ 88 } =\cfrac { -33-56 }{ 88 } =\cfrac { -89 }{ 88 } =-1\cfrac { 1 }{ 88 } $$
L.C.M of $$8$$ and $$11$$ is $$88$$

Mathematics
NCERT
Standard VII

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