Question

Solve graphically
2x-y=5 and x-y=1

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Answer 1

-y=1 x=2

2×-1=5. 2-y=1

-y=1-2

- y=-1

2x=5+1. y=1

2x=6

x=3

Answer 2

Graphic 2 =2x-y=5 and x-y=1

By adding graphics 2and 1, we get

Graphics 1+Graphics 2

2x-y=5+x-y=1

2x-y+x-y=5+1

2x-y+x-y=6

(x-y+x-y) =6+2

After adding x-y+x-y=6+2

2x+y=8

x+y=8/2

x+y=4

Putting value of x-y=4 in graphics 1

x+y=1

4+y=1

y=4-1

y=3

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