cafountainharri cafountainharri
  • 23-01-2018
  • Mathematics
contestada

2x+8y=20 y=2 using substitution method

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Аноним Аноним
  • 23-01-2018
Substitute y = 2 in 2x + 8y = 20 to get

2x + 8y = 20 
>> 2x + 8(2) = 20
>> 2x + 16 = 20
>> 2x + 16 -16 = 20 - 16
>> 2x = 4
>> 2x / 2 = 4 / 2 
>> x = 2

So x = 2, y = 2 is the solution. In order pair form (x,y) = (2,2)
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khushimatpadi khushimatpadi
  • 23-01-2018
there is an app called photomath which allows you to take a picture of the problem and gives you a step by step answer
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