Question

x+y=50, 4x+2y=140 x=? y=?
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Answer 1

Answer:

x=20 & y=30

Step-by-step explanation:

x=50-y

Putting the value of x in equation ii) we get,

4(50-y)+2y=140

200-4y+2y=140

200-2y=140

2y=200-140

2y=60

y=30

x=50 -30=20

Answer 2

x+y=50

y=50-x

4x+2y=140

4x+2(50-x)=140

4x+100-2x=140

2x=140-100

2x=40

x=40/2

x=20

y=50-x

y=50-20

y=30

x=20 ans...