Question

x+3y=3 and x=y+3

Answer 1

What is the objective of this question?

Answer 2

Theres not a lot of information?

Answer 3

probably find x and y

Answer 4

simultaneous equations

Answer 5

solve using the substitution method and explain the steps

Answer 6

x+3y=3
x=y+3

Answer 7

yes so x = y + 3.

the first equation is x + 3y = 3

but you KNOW what x equals. x = y + 3

so the first equation is x(which you KNOW) + 3y = 3
you know it because it = y + 3

so where you see x. think aha! thats not an x, thats a y + 3

Answer 8

it is supposed to be solved using the substitution method

Answer 9

yes. so why dont you substitute x. from one equation into the other equation. substitute x from the second equation into the first.

Answer 10

so x = y + 3 is the second equation. x EQUALS = y + 3. x IS THE SAME AS y + 3. wherever there is an x THIS X MAY AS WELL BE Y + 3. it is completely the same if its an x or if its a y plus 3

Answer 11

ok i am totally confused by your answer, so since the number 3 is in both equations does this mean that there is no solution

Answer 12

no okay sorry i wanted you to come up with the method by yourself. ill just tell you.

x + 3y = 3
x = y + 3

so since x = y + 3, we can just replace x with y + 3, because they are the same. So the first equation becomes

y + 3 + 3y = 3

do you see?

Answer 13

I am still a little confused and the method is the substitution method. I do see how you did that though

Answer 14

yeh, what i did was "substitute" y + 3 for x. since they are the same

Answer 15

the = sign means both are equal, the same, interchangable,

Answer 16

this is the substitution method, i didnt invent it! :P

Answer 17

ok i get it now thank you