Question

for x=4 x+4y=18 then y=​

Answer 1

Answer:

Correct option is

A

x=2, y=3

The given equations are

3x+4y=18 ...(i)

4x+3y=17 ...(ii)

On multiplying (i) by 4 and (ii) by 3 and subtracting, we get

12x+16y=72

−

1

2x

−

+

9y=

−

5

1

7y=21

⇒y=3

On putting y=3 in (i), we get

3x+12=18⇒3x=6⇒x=2

∴x=2,y=3

Step-by-step explanation:

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Answer 2

Answer:

x = 4 ,. x+4y=18

Step-by-step explanation:

4+ 4y = 18

4y = 18 - 4

4y = 14

y = 14/4

y = 7/2

y = 3.5

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