Question

Hi, it says to use the substitution method....

3x+5y=3/5
y=5x-1

Answer 1

I just want to know what to do. I have never done one before

Answer 2

this kid's gonna help you real good dunworry :D taught him myself hahaha jk

Answer 3

seems he's putting very much details into this..just be patient :D seems like it's gonna be good

Answer 4

igba is right

Answer 5

Method of substitution means that we have to put x=.... or y=.... onto one equation which is in terms of x and y to eliminate one of the variables in order to solve the equation
So y=5x-1 can help us elimnate y in 3x+5y=3/5.
Sub y=5x-1 into 3x+5y=3/5
3x+5(5x-1) =3/5
3x+25x-5=3/5
28x-5=3/5
28x=28/5
x=1/5
we can now get the value of x. Don't forget that we have to find y also.
So, put x=1/5 into y=5x-1,
y=5(1/5)-1=0
The answer is x=1/5 and y=0

Answer 6

there we go :DD

Answer 7

how did you get 28/5???

Answer 8

28x-5=3/5
as we want to find x so we want the answer to be expressed in x=...
first, to cancel -5 on LHS,
28x-5+5=3/5+5
28x = 28/5
there is 28 on LHS. We have to cancel it
28x/28=(28/5)/28
x=1/5

Answer 9

3/5 + 25/5 = 28/5...additional info ^_^

Answer 10

thank you so much