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3 years ago

What is the value of x in the solution to this system of equations?

Mathematics

2 answers:

irinina [24]3 years ago

8 0

Answer:

Step-by-step explanation:

B) -1

The 'x' value =-1 and y =-7

The solution of the given system of equations

(-1,-7)

Step-by-step explanation:

Step(i)

Given that the system of equations

x-y = 6 ..(i)

y = 2x -5 ..(ii)

By using substitution method,

substitute y=2x-5 in equation (i) , we get

x -(2x-5) =6

x -2x+5 =6

-x = 6-5

-x =1

x=-1

Step(ii):-

Put x=-1 in equation (ii) , we get

y = 2(-1) -5 = -2-5 =-7

The solution of the given system of equations

(-1,-7)

sp2606 [1]3 years ago

3 0

Answer:

B) -1

The 'x' value =-1 and y =-7

The solution of the given system of equations

(-1,-7)

Step-by-step explanation:

Step(i)

Given that the system of equations

x-y = 6 ..(i)

y = 2x -5 ..(ii)

By using substitution method,

substitute y=2x-5 in equation (i) , we get

x -(2x-5) =6

x -2x+5 =6

-x = 6-5

-x =1

x=-1

Step(ii):-

Put x=-1 in equation (ii) , we get

y = 2(-1) -5 = -2-5 =-7

The solution of the given system of equations

(-1,-7)

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