johnenglish16 johnenglish16

23-10-2018
Mathematics

contestada

[3/4+(-5/7)]

What is the answer please help me

Respuesta :

alessandracruz alessandracruz

23-10-2018

Answer:

[3/4 + (-5/7)] = 1 /28

≅ 0.03571429

Step-by-step explanation:

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jdoe0001 jdoe0001

23-10-2018

[tex]\bf \cfrac{3}{4}+\left( -\cfrac{5}{7} \right)\implies \cfrac{3}{4}-\cfrac{5}{7}\implies \stackrel{\textit{our LCD will then be 28}}{\cfrac{(7)3~~-~~(4)5}{28}}\implies \cfrac{21-20}{28}\implies \cfrac{1}{28}[/tex]

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