Question

2x -y = 2
2x - 2y = 4
solve by substitution

Answer 1

Answer:

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Answer 2

Step-by-step explanation:

2x-y=2

- 2x=2+y --- eq 1

and

2x-2y=4

2x=4+2y ---- eq 2

.

lets substitute them now

from eq 1 and 2

we get,

2+y=4+2y

y-2y=4-2

-y=2

y= -2