Question

solve the following pair of linnear equation by the substitution method.

0.2x +0.3y = 1.3
0.4x +0.5y = 2.3​

Answer 1

Answer:

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Answer 2

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