Question

Hello solve this for me all. Ans is-2 who do this i mark as brainlist

Answer 1

$\large \: \red{\mathcal{ANSWER}} \\ \begin{array}{|c |c| c|c|} \\ 7& - 7& - 6&4\\ - 4&2& 1& - 1 \\ 0& - 2& - 3&3\\ - 5&5& 6& - 8 \\ \end{array}$

$\begin{array}{c c c} \\ 7&a& - 6&b \\ c&d& 1&e \\ 0& - 2& f&g \\ - 5&h& 6& - 8 \\ \end{array} \:$

$\red{\mathcal{explanation}} \\ </p><p></p><p>assume \: variables \: at \: missing \: places \: a, b, c, d, e , f, g, h \\ </p><p> </p><p> See \: figure 2\\ </p><p>Our \: equation \: formed \\ </p><p>Row \\ </p><p>7+a-6+b = -2 \\ </p><p>a+b = -3 \\ </p><p></p><p>c+d+1+e = -2 \\ </p><p>c+d+e = -3 \\ \\ </p><p></p><p>$

$0-2+f+g = -f \\ </p><p>f = -g........ 1 \\ </p><p> \\ </p><p>-5+h+6-8= -2 \\ </p><p>h = 5 \\ \\ \\ </p><p></p><p>Column \\ </p><p>7+c+0-5 = -2 \\ </p><p>c = -4</p><p> \\ \\ </p><p>$

$a+d-2+h = -2 \\ </p><p>a+d+h = 0 \\ \\ </p><p></p><p>-6+1+f+6 = -2 \\ </p><p>f = -3 \\ </p><p>Also \: from (1) \\ </p><p> f = 3</p><p> \\ \\ </p><p>b+e+g-8 = -2 \\ </p><p>b+e+g = 6 \\ \\ \\ </p><p></p><p>$

$Diagonal \\ </p><p>7+d+f-8 = -2 \\ </p><p>7+d-11 = -2 \\ </p><p>d = 2 \\ </p><p> \\ </p><p>b+1-2-5 = -2 \\ </p><p>b-6=-2 \\ </p><p>b = 4 \\ \\ </p><p></p><p>from \: putting b \\ </p><p>a = -7 \\ </p><p></p><p>Also, \: solving \: above \: equations</p><p> \\ </p><p> \\ \: \: \:$

$We \: get</p><p> \: \: \: \\ e = -1 \\ \\ \:$

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