SOLUTION: 5+3x=7(x+3)

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Question 627049: 5+3x=7(x+3)
Found 2 solutions by jim_thompson5910, Maths68:
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
5%2B3x=7%28x%2B3%29 Start with the given equation.


5%2B3x=7x%2B21 Distribute.


3x=7x%2B21-5 Subtract 5 from both sides.


3x-7x=21-5 Subtract 7x from both sides.


-4x=21-5 Combine like terms on the left side.


-4x=16 Combine like terms on the right side.


x=%2816%29%2F%28-4%29 Divide both sides by -4 to isolate x.


x=-4 Reduce.


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Answer:

So the solution is x=-4

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Answer by Maths68(1474) About Me  (Show Source):
You can put this solution on YOUR website!
5+3x=7(x+3)
5+3x=7x+21
3x-7x=21-5
-4x=16
Divide by -4 both sides
-4x/-4=16/-4
x=-4

Check
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5+3x=7(x+3)
Put x=-4
5+3(-4)=7(-4+3)
5-12=7(-1)
-7=-7