How do you solve #7.5/12= 4.2/x#?

1 Answer
Shwetank Mauria
Jun 9, 2016

#x=6.72#

Explanation:

Multiplying each side of #7.5/12=4.2/x# by #12x# (it is GCD of denominators), we get

#7.5/12xx12x=4.2/x xx 12x# or

#7.5x=4.2xx12#

Now dividing each side by #7.5#, we get

#x=(4.2xx12)/7.5=(42xx12)/75=(42xx4cancel(12))/(25cancel(75))#

= #(42xx4xx4)/(25xx4)=672/100=6.72#

Related questions
Impact of this question
3300 views around the world
You can reuse this answer
Creative Commons License