SOLUTION: 7y+4=3-2y 5c-9=8-2c 5(2-g0=0 10(1-2y)=-5 92y-1)

Algebra ->  Equations -> SOLUTION: 7y+4=3-2y 5c-9=8-2c 5(2-g0=0 10(1-2y)=-5 92y-1)      Log On


   

Question 210228: 7y+4=3-2y


5c-9=8-2c


5(2-g0=0


10(1-2y)=-5 92y-1)
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
I'll do the first two to get you started


# 1


7y%2B4=3-2y Start with the given equation.


7y=3-2y-4 Subtract 4 from both sides.


7y%2B2y=3-4 Add 2y to both sides.


9y=3-4 Combine like terms on the left side.


9y=-1 Combine like terms on the right side.


y=%28-1%29%2F%289%29 Divide both sides by 9 to isolate y.


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Answer:

So the solution is y=-1%2F9 which approximates to y=-0.111.




# 2



5c-9=8-2c Start with the given equation.


5c=8-2c%2B9 Add 9 to both sides.


5c%2B2c=8%2B9 Add 2c to both sides.


7c=8%2B9 Combine like terms on the left side.


7c=17 Combine like terms on the right side.


c=%2817%29%2F%287%29 Divide both sides by 7 to isolate c.


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Answer:

So the solution is c=17%2F7 which approximates to c=2.429.