If 2 \x-\left[\begin{array}{cc}1 & 2 \ 7 & 4]\end{array}=\left[\begin{array}{cc}3 & 2 \ 0 & -2]\end{array}, then the value of \x will be

\left[\begin{array}{cc}2 & 2 \ 7 & 4]\end{array}

\left[\begin{array}{cc}1 & 2 \ 7 \/ 2 & 2]\end{array}

\left[\begin{array}{cc}2 & 2 \ 7 \/ 2 & 1]\end{array}

CGPET 2015 Solved Paper

Section: Mathematics

Question : 125 of 150

Marks: +1, -0

If 2x−[

1	2
7	4

]=[

3	2
0	−2

], then the value of x will be

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1+3	2+2
7+0	4−2

1	2
7∕2	2

2	2
7∕2	1

4	4
7∕2	1