From the sum of 4/14 and (-3/7) subtract the difference of 4 and (-13/23)
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[(4/14) + (-3/7)] - [4 - (-13/23)]
= [4/14 - 3/7] - [4 + 13/23] (opening the small brackets changes the sign)
= [(4-6)/14] - [(92+13)/23] (LCM)
=[-2/14] - [105/23]
=[-1/7] - [105/23]
= -1/7 - 105/23 (sign changes)
= (-23 -735)/161
= -758/161
=4.708
= [4/14 - 3/7] - [4 + 13/23] (opening the small brackets changes the sign)
= [(4-6)/14] - [(92+13)/23] (LCM)
=[-2/14] - [105/23]
=[-1/7] - [105/23]
= -1/7 - 105/23 (sign changes)
= (-23 -735)/161
= -758/161
=4.708
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