Question

¯\/¯¯0,04 *81 - 7 целых ¯\/¯¯1/49

Answer 1

$\sqrt{0.04 \times 81} - 7 \sqrt{ \frac{1}{49} } = 0.2 \times 9 - 7 \times \frac{1}{7} = 1.8 - 1 = 0.8$