lvasquev462
Algebra 1 Questions
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lvasquev462
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|dw:1362811330173:dw|
johnweldon1993
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so you add 4 to both sides....now you have x/3 = 15
multiply both sides by 3
which leave x = 45
now check....45/3? is 15...- 4 = 11 so yes
lvasquev462
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I have 10 more questions is that ok
johnweldon1993
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Yeah sure....I'm about to sign off inna few mins but anyone else can see this so they'll be able to help
lvasquev462
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k
lvasquev462
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|dw:1362811654721:dw|
johnweldon1993
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Okay so combine like terms 2x - 4x = -2x
1 - 9 = -8
so we have -2x - 8 =12
now add 8 to both sides
-2x = 20
x = -10
lvasquev462
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|dw:1362811807180:dw|
lvasquev462
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will it be 8x-6
kropot72
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@@lvasquev462 Do you want me to help you through the method of solution?
lvasquev462
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yes please
kropot72
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3(x - 3) = 5(x + 3)
First remove the brackets on each side by multiplying each term inside the brackets by the term outside the brackets. Can you do that?
lvasquev462
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yes 3x- 9 = 5x - 15
lvasquev462
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+15 i mean
kropot72
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Good work! So now we have:
3x - 9 = 5x + 15
Now subtract 3x from both sides. Can you do that?
lvasquev462
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luhm i get lost right here can u help me please
kropot72
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What is the result of subtracting 3x from 3x;
3x - 3x = ?
lvasquev462
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0 ?
kropot72
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Correct! So now when we subtract 3x from both sides of
3x - 9 = 5x + 15
we get
-9 = 5x - 3x + 15
What happens to the right hand side when you combine the two terms in x?
kropot72
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5x - 3x = ?x
lvasquev462
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2x right
lvasquev462
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i got 17 = x if i skip ahead will tht be correct
kropot72
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Correct again! Our equation has now become
-9 = 2x + 15
Next step is to subtract 15 from both sides to get the term in x all by itself on the right hand side. Can you do that?
lvasquev462
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-12
kropot72
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Sorry x = 17 is not correct. Please continue with the method I am showing you :)
lvasquev462
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15 minus 9 is -24
kropot72
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Well -15 - 9 = -24 sure enough.
So we have -24 = 2x
And x = -24/2 = ?
lvasquev462
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-12
kropot72
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Correct. The solution is x = -12.
lvasquev462
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thanks dude i appreciate your help