Question 579431: how do you solve x=y+2 4y=3x-5 using substitution method?
Answer by ankor@dixie-net.com(22740)   (Show Source):
You can put this solution on YOUR website! solve x=y+2 4y=3x-5 using substitution
:
x = y + 2
4y = 3x - 5
:
From the 1st equation we know that x = (y+2), therefore we can substitute (y+2) for x in the 2nd equation.
4y = 3(y+2) - 5
4y = 3y + 6 - 5
4y - 3y = 1
y = 1
:
Use the 1st equation to find x, replace y with 1
x = 1 + 2
x = 3
:
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Check this in the 2nd equation by substituting 3 for x and 1 for y
4(1) = 3(3) - 5
4 = 9 - 5; confirms our solutions of x and y
:
That was pretty easy, wasn't it?
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