14x - (2x - y) - y
14x + (-1(2x - y)) - y
14x + (-1(2x) - 1(-y)) - y
14x + (-2x + y) - y
14x + 1(-2x + y) - y
14x + 1(-2x) + 1(y) - y
14x - 2x + y - y
14x - 2x
12x
All answers are the pic.
When you are lining up the ratios, make sure they are aligning each other with the same unit.
It would be 100! 30% of 100 is 30
Answer:

Step-by-step explanation:
Answer:
482 scones.
Step-by-step explanation:
Given:
Cost of each scones = $1.50
Their current profits are $578.40 which is 80% of his total sales.
Question asked:
How many scones have they sold ?
Solution:
Let total number of scones sold = 
Cost of 1 scone = $1.50
Cost of
scones = $1.50
(Unitary method)
80% of his total sales = $578.40 (given)

Dividing both sides by 1.2

Thus, they have sold 482 scones.