Mathematics
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bella2025:
y+2=3(x-1)
y=-2x+10
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mhanifa:
What is the question?
bella2025:
@mhanifa wrote:
What is the question?
y+2=3(x-1)
y=-2x+10
I need help finding the solution
mhanifa:
Do you have an idea how to find it?
bella2025:
@mhanifa wrote:
Do you have an idea how to find it?
plug in -2x+10 for y I think
mhanifa:
Yes, good plan. Can you continue from there?
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bella2025:
-2x+10+2=3(x-1)
mhanifa:
Then?
bella2025:
-2x+10+2=3x-3
mhanifa:
Good, keep going
bella2025:
-2x+12=3x-3
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mhanifa:
Great. Keep going and let me know if you need any help. Looks like you don't need
bella2025:
@mhanifa wrote:
Great. Keep going and let me know if you need any help. Looks like you don't need
I dont know what to do after this is where I get stuck
mhanifa:
Here you need to collect like terms. Add 2x to both sides and then add 3 to both sides of equation
bella2025:
@mhanifa wrote:
Here you need to collect like terms. Add 2x to both sides and then add 3 to both sides of equation
how do I do that there are no like terms on the same side of the equation
mhanifa:
-2x + 12 + 2x = 3x - 3 + 2x >>> 12 = 5x - 3 >>> 12 + 3 = 5x - 3 + 3
Now it should be easier to continue
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bella2025:
@mhanifa wrote:
-2x + 12 + 2x = 3x - 3 + 2x >>> 12 = 5x - 3 >>> 12 + 3 = 5x - 3 + 3
Now it should be easier to continue
im still confused
mhanifa:
You add 2x to both sides, it cancels -2x on left side, right?
bella2025:
-2x+12=3x-3
yeah but then do you add it to both the 3x and the -3 or just the 3x
mhanifa:
Lets finish the first step, what you get after adding 2x?
bella2025:
@mhanifa wrote:
Lets finish the first step, what you get after adding 2x?
12=3x-3
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mhanifa:
Good, now we need to cancel -3 on the right. Add 3 to both sides, what you get?
bella2025:
15=3x
mhanifa:
Ok but it was wrong on previous one:
12 = 5x - 3
Now
15 = 5x
mhanifa:
Do you see why?
bella2025:
yeah
so x =3
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mhanifa:
Now find y
bella2025:
y+2=3(3-1)
y+2=9-3
mhanifa:
And?
bella2025:
idk what to do next
mhanifa:
y + 2 = 6
y = 6 - 2
y = 4
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bella2025:
@mhanifa wrote:
y + 2 = 6
y = 6 - 2
y = 4
im so confused on where 6 came from
mhanifa:
9 - 3 = 6
bella2025:
@mhanifa wrote:
9 - 3 = 6
oh ok so y =4
mhanifa:
You would better use the second equation:
y=-2x+10
y = -2(3) + 10
y = - 6 + 10
y = 4
bella2025:
@mhanifa wrote:
You would better use the second equation:
y=-2x+10
y = -2(3) + 10
y = - 6 + 10
y = 4
thank you
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mhanifa:
You are welcome!