Question

Solve by substitution method 2x+y-10=0 and x-y+1=0

Answer 1

Answer:

2x+y-10=0...... (1)

x-y+1=0............(2)

eq(2)

x-y+1=0

x=-1+y

Putting Value of x in eq(1)

2x+y-10=0

2(-1+y)+y-10=0

-2+2y+y-10=0

-2+2y+y=0+10

-2+2y+y=10

2y+y=10+2

2y+y=12

3y=12

y=12/3

SIMPLEST FORM

Y=4

IT WILL HELP YOU

Answer 2

Step-by-step explanation:

2x+y=10.........(1)

x-y= -1..........(2)

x= -1+y

Substitute the value x= -1+y in equation (1)

2(-1+y)+y=10

-2+2y+y=10

-2+3y =10

3y =10 -2

3y =8

y =8/3

substituting the value of y in equation (2)

x-8/3= -1

x = -1-8/3

x= -1-8/3

x = -9/3

x = -3

The solution of the equation is (-3,8/3).

HOPE IT IS CORRECT

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