solve the following pair of linnear equation by the substitution method.
0.2x +0.3y = 1.3
0.4x +0.5y = 2.3
Answers
Answered by
2
Answer:
if you have any doubts in any steps ask me
Attachments:
Answered by
0
Step-by-step explanation:
0.2x +0.3y = 1.3 --------------- equation 1
0.4x +0.5y = 2.3 --------------- equation 2
by multiplying +2 in equation 1,we get,
0.4x + 0.6y = 2.6 ---------------- equation 3
Now, by subtracting equation 2 from equation 3 , we get,
0.4x + 0.6y =2.6
0.4x +0.5y = 2.3
--------------------------
0 + 0.1 y = 0.3
y = 0.3/0.1
Therefore,y = 3
Now, by substituting y = 3 in equation 1 , we get,0.2x +0.3 (3) = 1.3
0.2x = 1.3 - 0.9
x = 0.4/0.2 = 2
Therefore, y = 3 & x = 2.
Hope it helps
Similar questions