Kumonekta sa mga eksperto at makakuha ng mga sagot sa IDNStudy.com. Ang aming platform ng tanong at sagot ay idinisenyo upang magbigay ng mabilis at eksaktong sagot sa lahat ng iyong mga tanong.

Can you please solve this substitution methd? 
x+y=10
x+4y



Sagot :

x+y=10
x+4y

let x in (x+y=10) be 0
x+y=10
0+y=10
y=10

let y in (x+4y) be 10
x+4y
x+4(10)
x+40
x=-40

So in using substitution method and by substituting it by 0 you will get an answer of y=10 and x=-40
x + y = 10    ----equation 1
x = 4y   -----equation 2
substitute equation 2 to equation 1
x + y = 10
4y + y = 10
5y = 10
 y = 2
substitute y=2 to equation 2
x = 4y
x =4(2)
x = 8