SOLUTION: I need to use substitution method 15x-10y=1 5y=-2+15x

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Question 428471: I need to use substitution method
15x-10y=1
5y=-2+15x
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
15 x + -10 y = 1 .............1

5 y = -2 15 x ---------2
/ 5 =
y = -0.4 3 x
Plug the value of y in (1)
15x-10(-0.4+3x)
15x+4-30x=1
15x-30x=1-4
-15x=-3
/-15
x=0.2
Plug the value of x in (1)
15x-10y=1
15*0.2-10y=1
3-10y=1
-10y=-2
/-10
y=0.2