Question

write 3 different solutions of the equation 2x +y =30​

Answer 1

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2x + ʏ = 30

(ɪ) ʟᴇᴛ x ʙᴇ 2 ...

2x + ʏ = 30

2(2) + ʏ = 30

4 + ʏ = 30

ʏ = 30/4

ʏ = 7.5

(ɪɪ) ʟᴇᴛ x ʙᴇ 3

2x + ʏ = 30

2(3) + ʏ = 30

6 + ʏ = 30

ʏ = 30/6

ʏ = 5

(ɪɪɪ) ʟᴇᴛ x ʙᴇ 4

2x + ʏ = 30

2(4) + ʏ = 30

8 + ʏ = 30

ʏ = 30/8

ʏ = 3.75

Answer 2

Answer :-

• x = 0, y = 30.
• y = 0, x = 15.
• x = 1, y = 28.

Explanation :-

First Solution :

Let x = 0.

➙ 2x + y = 30.

➙ 2(0) + y = 30.

➙ 0 + y = 30.

➙ y = 30.

Second Solution :

Let y = 0.

➙ 2x + y = 30.

➙ 2x + 0 = 30.

➙ 2x = 30.

➙ x = 30 ÷ 2.

➙ x = 15.

Third Solution :

Let x = 1.

➙ 2x + y = 30.

➙ 2(1) + y = 30.

➙ 2 + y = 30.

➙ y = 30 - 2.

➙ y = 28.

Therefore, These are the 3 solutions.