Question

if y=x/3 and 3x+4y=20 then X=​

Answer 1

Answer:

given , y=x/3

3y = x

Step-by-step explanation:

then putting value of x in equation

3x+4y=20

9y + 4y = 20

13y = 20

y = 20/13

then putting value of y in equation

3x + 4(20/13) =20

3x + 80/13 =20

39x + 80 =20×13

39x = 260- 80

x = 180/39 answer.

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Answer 2

Step-by-step explanation:

y=x/3

3x+4y=20 ..................(I)

Subsituting the value of y=x/3 in (I) ,

3x+4*x/3=20

(9x+4x)/3=20

13x=60

x=60/13