the solution of simultaneous equations 3x+y=21, 5x-2y=2 is
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ｓｏｌɴ:-
─────
ɢɪᴠᴇɴ
3x+ʏ=21 ┈┈┈┈┈┉┉┉┉>①
5x-2ʏ=2 ┄┄┄┅┅┅┅┅┅>②
ᑎOᗯ,
①×５=> １５ｘ+5ｙ=１０５┈③
②×3=> 15 x-6 y=6┄┄④
[Note- do smiler to get valuᴇ]
ᑎOᗯ,
③-④
15᙭+5Y=105
15᙭-6Y=6
(-) (+) (-)
────────────────
=>11Y=101
=>Y= 101/11
ᴘᴜᴛɪɴɢ "ʏ" ᴠᴀʟᴜ ɪɴ ᴇQᴜᴀᴛɪᴏɴ ①
3᙭+Y=21
=>3᙭+101/11= 21
=>3᙭=21-101/11
=>᙭= 130/33
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