SOLUTION: i cank't figure out this problem after the third step. could you please give me an explanation with each step. this book is not good with explainig. it is just homework 2x-3y=7

Question 71963This question is from textbook
: i cank't figure out this problem after the third step. could you please give me an explanation with each step. this book is not good with explainig. it is just homework
2x-3y=7
y=3x-7 solve by substitution method
thank you very much This question is from textbook

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
1st: 2x-3y=7
2nd: y=3x-7
--------
Substitute 2nd into 1st to solve for "x"
2x-3(3x-7) = 7
2x-9x+21 =7
-7x = -14
x=2
----
Substitute that into y=2x-7 to solve for "y"
y=3*2-7
y=6-7
y=-1
--------
Solution for the system of equations:
x=2 and y=-1
==========
Cheers,
Stan H.
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