Answer the following questions — task. Maths CBSE Homework Assignments, Class 7.

I) Find out which is not an equation.

$10 xyz$
$9 a^{2} = 10$
$\frac{10 m}{10} - \frac{9 n}{10} = 10$
$x^{2} yz = 10 z$

II) Find out which is not a simple linear equation.

$9 a + 10 b = \frac{10}{25}$
$\frac{10 y^{2}}{10} + \frac{10}{9} y = 9,$
$\frac{10 m}{10} - \frac{9 n}{10} = 10$
$9 x + 10 y = 10 + 10$

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