Question

.
Solve by substitution method :-
x + 3y = 10
4x + 5y =19​

Answer 1

Answer:

Here's the answer

Step-by-step explanation:

x + 3y =10 -------(1)

4x + 5y = 19 -------(2)

Multiplying eq.(1) by 4,

4x + 12y = 40 -------(3)

Subtracting eq.(2) by eq.(3)

_ 4x + 12y =40

4x + 5y = 19

----------------------

0 + 17y = 21

So. y = 21/17

Substituting this value of y in eq. (1) , we get,

x+ 3 (21/17) =10

x + (63/17) = 10

x = 10 - (63/17)

x = (170-63) / 17

x = 107 / 17

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