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Question -

निम्नलिखित समीकरणों को हल कीजिए?
(i) 1.5y – 7 = 0.5y
(ii) 2.8x = 5.4 + x
(iii) 0.5y + 0.2y = 0.3y + 2
(iv) 0.16 (5x – 2) = 0.4x + 7



Answer -

(i) 1.5y – 7 = 0.5y
हल:
1.5y – 7 = 0.5y
⇒ 1.5y – 0.5y = 7
⇒ y = 7

(ii) 2.8x = 5.4 + x
हल:
2.8x = 5.4 + x
⇒ 2.8x – x = 5.4
⇒ 1.8x = 5.4
⇒ x =  5.4/1.8 = 3

(iii) 0.5y + 0.2y = 0.3y + 2
हल:
0.5y +0.2y = 0.3y + 2
⇒ 5y + 2y –3y = 2
⇒ 4y = 2
⇒ y = 2/4 = 1/2

(iv) 0.16 (5x – 2) = 0.4x + 7
हल:
0.16 (5x – 2) = 0.4x + 7
⇒ 8x – .32 = 4x + 7
⇒ 8x – 4x 7+ 32
⇒ 4x = 7.32 =
⇒ x = 7.32/4 = 18.3

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