Question

method of substitutiin 5x+y=26, 4x+3y=23​

Answer 1

Answer:

x+y=3...(1)

4x−3y=26.(2)

Isolate x from equation (1), we get

x=3.(3)

Substituting the value of x in equation (2).

4(3−y)−3y=26

or,12−4y−3y=26

or,−7y=14

or,y=−2

Now for x, putting in (3)

x=3−y=3−(−2)=5

Answer : x=5 and y=−2

Answer 2

x,y} = {-10,-1

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