(صـ17)

1: y=2
2: a=5
3: z=4
4: p=21
5: -27
6: 45
7: 65
8: 55
9: y+62.3=20186.7=80124
10: x-3-11.5 x=14.5


(صـ18)

1: 14
2: -243
3: -28
4: -18
5: x=-399
6: x=1386
7: x=-4
8: x=16 زهرة 7÷7x=112 7÷7x=112



(صـ19)

1: 6n-20
2: 0.5d-25
3: 5m+2
4: s=9
5: y=1
6: j=2
7: b=7
8: 50+20t

[fot1]مع تحياتي اختكم [/fot1]: мε мε