Question

Find the solution of this system of equations -x-4y=37 -2x-4y=-53

Answer 1

X=90, y =-127/4

Explanation:

Subtract the second equation from the first and you get X+ 0y= 90. Replace x=90 in either equation and you get y= -127/4.

Answer 2

Final answer is x=90,
`y=-(127)/(4)`

Explanation:

Given equations are:

-x-4y=37 ...(i)

-2x-4y=-53 ...(ii)

multiply (ii) by -1

2x+4y=53 ...(iii)

Add (i) and (iii)

x=90

plug value of x=90 into (i)

-x-4y=37

-90-4y=37

-4y=37+90

-4y=127

`y=-(127)/(4)`

Hence final answer is x=90,
`y=-(127)/(4)`