unicorngachagirl7155 unicorngachagirl7155

24-11-2021
Mathematics

contestada

Solve the simultaneous equations
3x - y = 5
-x + y = -1

Respuesta :

Leora03 Leora03

25-11-2021

Answer:

x= 2, y= 1

Step-by-step explanation:

3x -y= 5 -----(1)

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

(1) +(2):

3x -y -x +y= 5 -1

2x= 4

Divide both sides by 2:

x= 4 ÷2

x= 2

Substitute x= 2 into (2):

-2 +y= -1

y= -1 +2

y= 1

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