Answer:

Step-by-step explanation:
An algebraic expression is an expression consists of constants, variables, and the algebraic operations: addition, subtraction, multiplication and division.
Given: algebraic expressions are
.
To divide:
by 
Solution:

There are no common terms in numerator and the denominator.
So, answer is 
Take the discount. Let's call it x%. Turn it into a fraction, and multiply it by the item. Let's call the item "i".
The amount discounted is

.
Now subtract this from the original cost of the item.
Therefore,

is the solution.
Y=2x+5
sub 2x+5 for y in other equaiton
10x+3(2x+5)=19
distribute
10x+6x+15=19
minus 15 from both sides
16x=4
divide both sides by 16
x=1/4
sub back
y=2x+5
y=2(1/4)+5
y=1/2+5
y=5.5=11/2
solution is (1/4,11/2) or in decimal, (0.25,5.5)
27+16x because u use the distributive property