SOLUTION: hi i have the following problem and i need to know how to the check for my problem; 5x+7=-8
=5x+7-7=-8 - 7
=5/5 = 15/5
=1x + -3
= x = -3
so ho
Algebra.Com
Question 226241: hi i have the following problem and i need to know how to the check for my problem; 5x+7=-8
=5x+7-7=-8 - 7
=5/5 = 15/5
=1x + -3
= x = -3
so how do i check this?t
thanks,
Kristi
Found 2 solutions by jim_thompson5910, Alan3354:
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Note: you don't need to post your email as the system will automatically email you that a tutor has answered the question.
Start with the given equation.
Subtract from both sides.
Combine like terms on the right side.
Divide both sides by to isolate .
Reduce.
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Answer:
So the solution is
So you are correct. Good job.
Here's how you check your answer:
Start with the given equation.
Plug in
Multiply 5 and -3 to get -15
Add -15 to 7 to get -8
Since the equation is true, this verifies the answer.
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
hi i have the following problem and i need to know how to the check for my problem; 5x+7=-8
=5x+7-7=-8 - 7
=5/5 = 15/5
=1x + -3
= x = -3
so how do i check this?
Sub -3 for x
5x+7 = -8
5*(-3) + 7 =? -8
-15 + 7 =? -8
-8=-8 so -3 is correct.
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