Question

x+2y=10 and 2x-4y=-4 by elimination method
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Answer 1

(x+2y=10*)2

=2x+4y=20

 -      -     -

 2x-4y=-4

  0+8y=24

8y=24

y=24/8

y=3

subs y value in first equation

x+2(3)=10

x+6=10

x=10-6

x=4

Answer 2

Answer:

x+2y=10

and 2x_4y=-4

or x-y=1

x=y+1

then

(y+1)+ 2y=10

3y+2y=10

5y=10

y=10/5

y=2

then

x=y+1

x=2+1

x=3