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y  2x = 10
y = 4x + 8
Solve by substitution.



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AriPotta
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well, you know that y = 4x + 8, so you just substitute that for y in the first equation

rainbow22
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y=2x+10
2x+10=4x+8
solve

rainbow22
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2x+2=4x
2x=2
x=1

AriPotta
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do you know what to do now?

Discord
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Actually can do do it again. I'm still lost.

rainbow22
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first you would find y in terms of x

AriPotta
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it would be (4x + 8)  2x = 10

AriPotta
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so you combine like terms first

AriPotta
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4x and 2x being like terms

Discord
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How do you get 2x?

AriPotta
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because in our equation, it says (4x + 8)  2x = 10. minus 2x is the same as 2x

AriPotta
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so to combine 4x and 2x, it would be 4x  2x, which is...

Discord
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Oh man. I wrote that backwards.

Discord
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Its y = 2x  10

AriPotta
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what? can you write the whole question correct? :/

Discord
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Its y = 2x  10
y = 4x + 8

AriPotta
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oh

AriPotta
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ok, so it would be 2x  10 = 4x + 8

AriPotta
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now you have to add 4x to both sides

AriPotta
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wait.

AriPotta
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nvm, continue doing that

Discord
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Alright thanks. I understand now.

AriPotta
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oh ok.