SOLUTION: 5a-5=7+2a. 4y-2=6y+6. 5t-5=5t+7

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Question 362569: 5a-5=7+2a.
4y-2=6y+6.
5t-5=5t+7
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
# 1


5a-5=7%2B2a Start with the given equation.


5a=7%2B2a%2B5 Add 5 to both sides.


5a-2a=7%2B5 Subtract 2a from both sides.


3a=7%2B5 Combine like terms on the left side.


3a=12 Combine like terms on the right side.


a=%2812%29%2F%283%29 Divide both sides by 3 to isolate a.


a=4 Reduce.


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Answer:

So the answer is a=4

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# 2



4y-2=6y%2B6 Start with the given equation.


4y=6y%2B6%2B2 Add 2 to both sides.


4y-6y=6%2B2 Subtract 6y from both sides.


-2y=6%2B2 Combine like terms on the left side.


-2y=8 Combine like terms on the right side.


y=%288%29%2F%28-2%29 Divide both sides by -2 to isolate y.


y=-4 Reduce.


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Answer:

So the answer is y=-4

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# 3



5t-5=5t%2B7 Start with the given equation.


5t=5t%2B7%2B5 Add 5 to both sides.


5t-5t=7%2B5 Subtract 5t from both sides.


0t=7%2B5 Combine like terms on the left side.


0t=12 Combine like terms on the right side.


0=12 Simplify.


Since this equation is never true for any t value, this means that there are no solutions.