Question

Do sum using substitutions method 2x+8y=20; y=2​

Answer 1

Answer:

2x + 8y = 20....... ( 1)

Substututing y= 2 in equation (1)

2x + 8(2) = 20

2x+8×2= 20

2x+ 16 = 20

2x= 20-16

2x = 4

x =4/2

x = 2

THE VALUE OF X IS 2.

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Answer 2

Given

By using substitution method solve this equation, 2x+8y=20. where, y= 2.

Answer:

X= 2.

Explanation :

Given, equation

$\tt \leadsto2x + 8y = 20.$

$\tt \leadsto2x + 8(2) = 20.$

$\tt \leadsto2x + 16 = 20.$

$\tt \leadsto \cancel{2}x = \cancel{4.}$

$\tt \leadsto x = 2.$

Therefore, the value of x be 2.