Question

¯/¯¯0,04 *81 - 7 целых ¯/¯¯1/49

Answer 1

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