janvierjemima02
janvierjemima02
20-08-2015
English
contestada
5 less than three times a number is 10
Respuesta :
Аноним
Аноним
20-08-2015
5−3n=10
Simplify
5+−3n=10
−3n+5=10
Subtract 5 from both sides.
−3n+5−5=10−5
−3n=5
Divide both sides by -3.
−3n−3=5−3
n=−5/3
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Аноним
Аноним
23-08-2015
[tex]x-the\ number\\\\3x-5=10\ \ \ \ |add\ 5\ to\ both\ sides\\\\3x-5+5=10+5\\\\3x=15\ \ \ \ |divide\ both\ sides\ by\ 3\\\\\frac{3x}{3}=\frac{15}{3}\\\\\huge\boxed{x=5}\\\\check:\\3x-5=3(5)-5=15-5=10\ \ \ correct\ :)[/tex]
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