помогите пожалуйста ​

(6,72:3/5+1 1/8* 0,8):1,21 -58= 2 70/121
1) 6,72: 3/5= 672/100*5/3= 28
2)1 1/8*0.8= 9/8*8/10= 9/10
3) 28+9/10= 37/10= 3 7/10
4)37/10: 121/100= 37/10*100/121= 370/121= 3 7/121
5) 3 7/121-58= 370/121-58= 312/121= 2 70/121

(6,72 : 3/5 + 1,1/8 × 0,8) : 1,21 - 6,8 = 1836/6005

1) 6,72 : 3/5 = 672/100 : 6/10 = 6720/600 = 11,1/5

2) 1,1/8 × 0,8 = 9/8 × 8/10 = 90/64 = 1,13/32

3) 11,1/5 + 1,13/32 = 56/5 + 45/32 = 1792/160 + 225/160 =

= 2017/160 = 12,97/160

4) 12,97/160 : 1,21 = 2017/160 : 121/100 = 201700/19360 =

= 10,40/121

5) 10,40/121 - 6,8 = 12500/1210 - 8228/1210 = 3672/1210 =

= 1836/6005