Question
Download Solution PDFजर x + y = 12, y + z = 15 आणि x + z = 18, तर x + y + z = ? शोधा.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFदिलेले आहे:
x + y = 12, y + z = 15, x + z = 18
गणना:
x + y = 12 ----(1)
y + z = 15 ----(2)
x + z = 18 ----(3)
(1) आणि (2) समीकरणे सोडवून
⇒ x – z = -3 ----(4)
(3) आणि (4) समीकरणे सोडवून
⇒ x = 7.5
x चे मूल्य समीकरण (1) मध्ये ठेवून
⇒ y = 4.5
y चे मूल्य समीकरण (2) मध्ये ठेवून
⇒ z = 10.5
x + y + z
⇒ 7.5 + 4.5 + 10.5
⇒ 22.5
∴ x + y + z चे मूल्य 22.5 आहे.
Shortcut Trick
(1), (2) आणि (3) यांची बेरीज करा
⇒ 2(x + y + z) = 45
⇒ (x + y + z) = 45/2 = 22.5
∴ x + y + z चे मूल्य 22.5 आहे.
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