poptartlizard
poptartlizard poptartlizard
  • 04-02-2018
  • Mathematics
contestada

Can someone explain how to get the answer,
[tex] \frac{105}{2} [/tex]
? I'm confused

Can someone explain how to get the answertex frac1052 tex Im confused class=

Respuesta :

jdoe0001 jdoe0001
  • 04-02-2018
[tex]\bf \cfrac{x}{5}-\cfrac{x}{7}=3\impliedby \begin{array}{llll} \textit{let's multiply both sides by }\stackrel{LCD}{35}\\ \textit{to do away with the denominators} \end{array} \\\\\\ 35\left( \cfrac{x}{5}-\cfrac{x}{7}\right)=35(3)\implies 7x-5x=105 \\\\\\ 2x=105\implies x=\cfrac{105}{2}[/tex]
Answer Link
Аноним Аноним
  • 04-02-2018
First eliminate the fractions by multiplying each term by 35:-

7x - 5x = 105

2x = 105

x = 105/2


Answer Link

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