Question

3x+ 5y= 10; y- 2x= 2; x-y = ?​

Answer 1

Answer:

x-y=-2/5

Step-by-step explanation:

2x=2

x=1

x=1in eq 3x+5y=10

3+5y=10

5y=7

y=7/5

when we sub x and y

we get -2/5

Answer 2

Answer:

3x+5y=10. this is eq1

-2x+y=2. this is eq2

in eq2

-2x+y=2

y=2+2x. this is eq 3

sub eq3in eq1

3x+5(2+2x)=10

13+10=10

x=0

sub value of x and y in x-y

0-(2+2x)

=0

so x-y=0