Problem

$x+y+z=3$
$x+2y+3z=4$
$x+4y+9z=6$
$m$ $4^{°}$ $41$

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Solution

Qanda teacher - Sayan Ray

Student

I don't understand. What you have done

Qanda teacher - Sayan Ray

Which step

Student

4th to last

Qanda teacher - Sayan Ray

Have you understand 4th and 5th equation

Student

No

Right Answer

Qanda teacher - Sayan Ray

My answer is also right and my process is much less than this matrix method

Still don't get it?

Ask this question to Qanda teacherSimilar problem

$x+y+z=1$
$2x+2y+3z=6$
$x+4y+9z=3$

10th-13th grade

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