Сделай все по порядку чтобы понятно было

I.

1. \(-8+5{,}6=-2{,}4\)
2. \(-4{,}3+9=4{,}7\)
3. \(-10+7{,}2=-2{,}8\)
4. \(-0{,}9+4=3{,}1\)
5. \(-0{,}8+1=0{,}2\)
6. \(-0{,}6+5=4{,}4\)
7. \(1{,}8-3=-1{,}2\)
8. \(1{,}2-4=-2{,}8\)

II.

1. \(-\frac{1}{6}+1=\frac{5}{6}\)
2. \(-7+\frac34=-6\frac14\)
3. \(-1+\frac5{13}=-\frac8{13}\)
4. \(-5+\frac17-5-\frac58=-10\frac{27}{56}\)
5. \(-\frac49+2{,}6+\frac16-2{,}6=-\frac5{18}\)
6. \(-\frac1{15}+\frac6{10}+\frac1{15}-\frac6{10}=0\)
7. \(-\left(-\frac57\right)-\frac1{10}-\frac25-(-0{,}2)=\frac{29}{70}\)
8. \(-\frac{11}{15}-9+\frac{11}{15}-0{,}9=-9{,}9\)
9. \(-\frac{15}{19}+\frac23+6-\frac23=5\frac4{19}\)
10. \(-16+2{,}8-6{,}2=-19{,}4\)
11. \((+31)-7{,}8-35{,}3=-12{,}1\)
12. \(-21+(-12{,}9)+0{,}75=-33{,}15\)
13. \(-5{,}6-(-3{,}1)+64{,}8=62{,}3\)
14. \(-15{,}9-(+77{,}8)-(-75{,}7)=-18\)
15. \(-0{,}35-3\frac17-96+0{,}35+18+3\frac17=-78\)

III.

1. \(-a+15a-7a=7a\)
2. \(-2{,}6b-(+4{,}65b)+2{,}4b=-4{,}85b\)
3. \(-\frac14x-\frac18x+\frac56x=\frac{11}{24}x\)
4. \(-21a+a+a-14a=-33a\)
5. \(-(-2{,}9b)+(-19b)-7b=-23{,}1b\)
6. \(\frac1{14}m-\frac5{14}m-\frac27m=-\frac47m\)
7. \(1{,}8a-(-0{,}5)+2a-2-2{,}3a+1{,}6a=3{,}1a-1{,}5\)
8. \(2a+8{,}4-3a-9=-a-0{,}6\)
9. \(2{,}8-(-4a)-2{,}8+a-3a=2a\)
10. \(-7a-9{,}2b-(-5a)+18b=-2a+8{,}8b\)
11. \(3a-5b-7a-8b+4a=-13b\)
12. \(x+y-7{,}2-x+(-y)-0{,}8=-8\)
13. \(-4a-12{,}7+8a+4a-13{,}7=8a-26{,}4\)
14. \(-4m+8x-4m-8{,}7x=-8m-0{,}7x\)
15. \(-3a+b+a-4b+2a=-3b\)
16. \(-1{,}2a+3{,}4b-8+3a-5b+8=1{,}8a-1{,}6b\)
17. \(-a-(+b)+3a-(-2b)-3a-2b+9b=-a+8b\)
18. \(-6+4p-(-11{,}8)-16{,}4p=5{,}8-12{,}4p\)
19. \(8{,}7a-32a-1{,}5+21=-23{,}3a+19{,}5\)
20. \(9{,}1b-5{,}8+18-18b=-8{,}9b+12{,}2\)
21. \(-1\frac23a+(-2{,}75)+\frac49a-(-4{,}25)=-1\frac29a+1{,}5\)
22. \(2{,}5a-\frac34b+(-1{,}25b)+2\frac12a=5a-2b\)
23. \(x+3{,}5-(+2y)+\left(-2\frac13x\right)+1{,}2y=-\frac43x-0{,}8y+3{,}5\)
24. \(1{,}75m-\frac56n-(-2n)+\left(-2\frac14m\right)=-0{,}5m+\frac76n\)
25. \(3x-(+3{,}3y)+\frac27y+(-1{,}5)+0{,}6x=3{,}6x-\frac{211}{70}y-1{,}5\)