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Solve the following pairs of Linear equation by substitution method

         

Asked by Topperlearning User 8th August 2017, 9:20 AM
Answered by Expert
Answer:

x + 0.5y = 3.5             ...(1)

0.5x + 0.3y = 1.9         ...(2)

From (1),  x = 3.5 - 0.5y       ....(3)

Putting this value in (2)

0.5(3.5 - 0.5y) + 0.3y = 1.9

1.75 - 0.25y + 0.3 y = 1.9

0.05y = 0.15

y =

now putting y = 3 in (3)

x = 3.5 - (0.5 X 3) = 2

Hence x = 2 and y = 3 is the required solution

Answered by Expert 8th August 2017, 11:20 AM
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