ashishkeshari957
ashishkeshari957 ashishkeshari957
  • 18-08-2021
  • Mathematics
contestada

URGENT WILL MARK BRAINLIEST
Show your work and solve for x and y.
3x + y = 8
2x + 4y = 12​

Respuesta :

Аноним Аноним
  • 18-08-2021
  • 3x+y=8--(1)

2x+4y=12

  • x+2y=6--(2)

  • (1)×1 and (2)×3

[tex]\\ \rm\Rrightarrow 3x+y=8[/tex]

[tex]\\ \rm\Rrightarrow 3x+6y=18[/tex]

Subtract both

[tex]\\ \rm\Rrightarrow -5y=-10[/tex]

[tex]\\ \rm\Rrightarrow y=\dfrac{-10}{-5}[/tex]

[tex]\\ \rm\Rrightarrow y=2[/tex]

Put the value in eq(2)

[tex]\\ \rm\Rrightarrow x+2(2)=6[/tex]

[tex]\\ \rm\Rrightarrow x+4=6[/tex]

[tex]\\ \rm\Rrightarrow x=6-4=2[/tex]

Answer Link
rithvikm
rithvikm rithvikm
  • 18-08-2021

Answer:

x=2, y=2

Step-by-step explanation:

-2(3x+y=8)

3(2x+4y=12)

-6x+-2y=-16

6x+12y=36

0+10y=20

       y=2

3x+2=8

3x=6

x=2

Answer Link

Otras preguntas

Marita orders 12 yards of material to make banners.If she needs 2 foot of fabric for each banner how many banners can she make?
What si the answer to this? I'm bad at graphs sorry :). Btw it's number 22
Are $64,480 per year and $1,240 per week both unit rates?
What is the missing dimension of a parallelogram if h=5 1/4feet and A=12feet
How do you create an equation that represents a proportional table?
How to solve systems of equations: 4x+5y=11                                                     2x+6y=16          show steps plz
The density of cork is 0.24 g/cm3. What is the volume of a 240-gram piece of cork?
Multiply. Simplify your answer and write it as a proper fraction or as a whole or mixed number.1/2 × 9 =
how do you know how to write 1/2 in percent?
33 is 90% of what number