A number is doubled and then increased by seven. The result is ninety three. What is the origonal number

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01-02-2015
Mathematics

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A number is doubled and then increased by seven. The result is ninety three. What is the origonal number

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ValyRemus ValyRemus · Answer 1 · 2015-02-01T15:52:59+01:00

ValyRemus ValyRemus

01-02-2015

[tex]\hbox {Let x - to be your number.}[/tex]

[tex]2x+7=93[/tex] ⇒ [tex]2x=93-7[/tex] ⇒ [tex]2x=86[/tex]

[tex]x= \frac{86}{2} [/tex] ⇒ [tex]\boxed {x=43}[/tex]

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zinora2012 zinora2012 · Answer 2 · 2015-02-01T15:54:48+01:00

zinora2012 zinora2012

01-02-2015

Subtract 7 from both sides
2 . x = 86 Divide both sides by 2
X = 43

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