SOLUTION: #1. xy(x-y) #2. (4x+7)-(3x-5) #3. 15-3y=2y+5 #4. 5/16y+3/8y=1/4y+2

Algebra ->  Exponents-negative-and-fractional -> SOLUTION: #1. xy(x-y) #2. (4x+7)-(3x-5) #3. 15-3y=2y+5 #4. 5/16y+3/8y=1/4y+2      Log On


   

Question 146986: #1. xy(x-y)
#2. (4x+7)-(3x-5)
#3. 15-3y=2y+5
#4. 5/16y+3/8y=1/4y+2
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
I'll do the first and third to get you started


# 1
xy%28x-y%29+ Start with the given expression

x%5E2y-xy%5E2+ Distribute


# 3



15-3y=2y%2B5 Start with the given equation.


-3y=2y%2B5-15 Subtract 15 from both sides.


-3y-2y=5-15 Subtract 2y from both sides.


-5y=5-15 Combine like terms on the left side.


-5y=-10 Combine like terms on the right side.


y=%28-10%29%2F%28-5%29 Divide both sides by -5 to isolate y.


y=2 Reduce.


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Answer:

So the answer is y=2