Question

if the US Senate, with 100 members, contains 20 more Democrat's than Republicans how many Democrat's does it contain?

Answer 1

100=d+(d-20)
First add 20 to both sides.  
120=d+d
Now divide the sides by 2.
D=60
There are 60 democrats.
100=60+(60-20)
100=60+40

there are 60 democrats and 40 republicans

Answer 2

Answer:

C

Step-by-step explanation:

The answer is 60