X=-6
you could either multiply 9 on both sides or distribute the 9 and isolate the variable
Answer:
Step-by-step explanation:
i is an imaginary unit, this means
Rewrite -5 as 
then
Rewrite -25 as 
then
Here is answer in the picture I hope this will help to you
Let q be the number of 25 cent coins.
Let d be the number of 10 cent coins.
0.25q+0.10d= 3.95...(1)
q-d=6...(2)
(2)-> q-d= 6
q-d+d= 6+d
q= 6+d...(2a)
(2a)-> (1) 0.25q+0.10d=3.95
0.25(6+d)=0.10d= 3.95
1.95+0.25d+0.10d= 3.95
0.35d= 3.95-1.5
0.35d/0.35= 2.45/0.35
d= 7...(3)
(3)->(2) q-d= 6
q-7= 6
q=6+7
q= 13
There are 13 quarters and 7 dimes.
