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Question -

Write each of the following as an equation in two variables.
(i) 2x = -3
(ii) y = 3
(iii) 5x =  
(iv) y = x



Answer -

(i) 2x = -3⇒  2x + 3 = 0
⇒ 2x + 0y + 3 = 0
(ii) y= 3 ⇒  y-3=0
⇒  0x+ y-3 = 0
(iii) 5x =  ⇒ 10x = 7
⇒  10x + 0y – 7 = 0
(iv) y= x⇒2y = 3x
⇒ 3x – 2y + 0 = 0

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