Question

x+y=11 & y+2=1/8(10y+x)​

Answer 1

Answer:

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1

2

3 A

3 B

3 C

3 D

4

5 A

5 B

5 C

5 D

5 E

5 F

5 G

5 H

5 I

5 J

5 K

5 L

Q. 5 E

4.3

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Class 9th

West Bengal Mathematics

5. Linear Simultaneous Equations

Answer

expressing the equations in terms of one variable

x + y = 11

………[1]

⇒ 8y + 16 = 10y + x

………[2]

by comparing eq. [1] and eq. [2]

⇒ 16 – 2y = 11 – y

⇒ y = 5 ………[3]

by using [3] in [1]

⇒ x = 11 – y

⇒ x = 11 - 5

⇒ x = 6

Answer 2

Answer:

Step-by-step explanation: