goobyass goobyass

13-01-2016
Mathematics

contestada

solve 3x - 5 = 7x - 17

a. 2

b. 3

c. 5

d. 6

Respuesta :

thatsmartqueenbee35 thatsmartqueenbee35

13-01-2016

3x-5=7x-17
3x-5+5=7x-17+5
3x=7x-12
3x-7x=7x-12-7x
-4x=-12 then divide both sides by -4 and you will get x=3

Answer Link

Billymkhoi Billymkhoi

13-01-2016

3x -5= 7x -17
⇒ 7x -17= 3x -5
⇒ 7x -3x= -5+ 17
⇒ 4x= 12
⇒ x= 12/4
⇒ x= 3

The correct answer is b. 3~

Answer Link

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