21sav
21sav
01-12-2016
Mathematics
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16: 2r - 6 =22
17: 3g + 7 = 31
18: 3f - 7 = 38
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Аноним
Аноним
01-12-2016
16: 2r - 6 =22
2r = 22 + 6
2r = 28
r =28/2
r = 14
17: 3g + 7 = 31
3g = 31 - 7
3g = 24
g = 24/3
g= 8
18: 3f - 7 = 38
3f = 38 +7
3f = 45
f = 45/3
f = 15
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