How do you solve #2/(7d+16)=7/9#?

Question

642 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2016-09-10T13:16:52

# d = -94/49 = -1 45/49#

When you have an equation which has only ONE fraction on each side, you can get rid of the fractions by cross-multiplying.

#2/(7d+16) = 7/9#

#7(7d+16) = 2xx 9#

#49d +112 = 18#

#49d = 18-112 = -94#

#d = -94/49#

#d = -1 45/49#