LaJenniii
LaJenniii LaJenniii
  • 18-02-2021
  • Mathematics
contestada

What should your first step look like when solving this system by substitution? y = 2x - 6 -3x + 4y = -12​

Respuesta :

gpgaurav890
gpgaurav890 gpgaurav890
  • 18-02-2021

Step-by-step explanation:

y=2x-6

2x-y = 6 --------------(i)

-3x+4y = -12 ---------(ii)

Multiplying equation (i) by 4, we get

8x-4y=24 --------------(i)

-3x+4y=-12 ------------(ii) By subtracting

----------------

5x= 12

x=12/5= 2.4

putting value of x in equation (I)

2*2.4-y =6

4.8-y=6

y= -6+4.8

y= - 1.2

Therefore the value of x= 2.4 and y= -1.2

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