помогите пожалуйста решить
1. 2 5/14-2 1/4:(-1/7+5 1/2)
2. (2/5*1 1/4-2 1/4):(-1/2)
3. -13/20*(8/15-3/5*(1/3))-4
4. (15/16-2 1/4+3/8)*(-1/32)
5. -2 1/6+2 1/12*(1/4-1 1/3*(-4/13))​
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