Question

343у (6степени) / 7у(4степени)

Answer 1

$\boxed{\frac{343y^6}{7y^4}= 49y^2}$

Сократили на 7 потом на y^4

Answer 2

$\frac{343y^6}{7y^4} = \frac{7^3* y^6}{7^1*y^4} = 7^{3-1} * y^{6-4} = 7^2y^2 = 49y^2$