Question

3,20(1)+2= 7-9,(9)=17-0,1(12)=-4,5×9,4(7)=-4,2(9): 4,3=0,12(3):(-9,25)=Пожалуйста помогите, с подробным решением. ​

Answer 1

3,20(1) + 2 = 3,20(1) is the same as 3.20 So, 3.20 + 2 = 5.20

7 - 9,(9) = This is a mixed number, where 9 is repeated infinitely. So, 7 - 9,(9) = 7 - 9.9999... = -2

17 - 0,1(12) = 0,1(12) is the same as 0.112 So, 17 - 0.112 = 16.888

-4,5 × 9,4(7) = 9,4(7) is the same as 9.47777... So, -4.5 × 9.47777... = -42.64999...

-4,2(9) ÷ 4,3 = -4.29 ÷ 4.3 = -0.99767

0,12(3) ÷ (-9,25) = 0,12(3) is the same as 0.123 So, 0.123 ÷ (-9,25) = -0.0133

I hope this helps! Let me know if you have any other questions.