winters winters

15-02-2014
Mathematics

contestada

three is twenty-one, divided by the sum of a number and five

Respuesta :

15-02-2014

3=21/(x+5)
Cross multiply
3(x+5)=21
Divide 3
X+5 = 7
Subtract 5
X= 2

Answer Link

wacko37 wacko37

15-02-2014

3=21/(x+5)
3(x+5)=21
3x+15=21
3x=6
x=2

Answer Link

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