Question

999x+888y=1332
888x+999y=555
solve by simultaneous equation?​

Answer 1

♡⚘✮ʜᴇʏᴀ ᴍᴀᴛᴇ ʜᴇƦᴇ ɪS ʏᴏᴜƦ ᴀɴSᴡᴇƦ :

$we \: have, \:$

$999x \: + \: 888y = \: 1332 \\ 888x \: + 999y = 555 \\</p><p> on \: dividing \: both \: eqn \: by \: 111, \\ </p><p>we \: get, \: \\ 9x \ + 9y = 12...(1) \\ 8x + 9y = 5...(2) \\ </p><p>on \: multiplying \: eq. \: (1)by \: 9 \: and \: eq. \: (2) \: by \: 8 \: then \: we \: subtract \: eq \: (2) \: from \: eq \: (1) \: \\ we \: get \: \\ 81x \: + 72 \: y \: = \: 108 \\ 64 x \: + 72 \: y \: = - 40 \\ 17x = \frac{68 }{17} = 4 \\ now \: put \: the \: value \: of \: x \: in \: eqn \: (1). \: we \: get \: \\ 9 \times 4 + 8y = 12 \\ 36 + 8y = 12 \\ 8y = 12 - 36 \\ 8y = - 24 \\ y = \frac{ - 24}{8} \\ = - 3$

♡ Hope it helps uh plzz mark as brainliest ♡