Odpowiedzi

2010-02-03T14:35:55+01:00
D) -2m + 7 = m - 6
-2m -m = -6-7
-3m=-13 / :(-3)
m=13/3 = 4 1/3

e) 6 -5x = 2x - 7
-5x-2x=-7-6
-7x=-13 / :(-7)
x = 13/7 = 1 6/7

f) -5t + 1 = 8 - 6t
-5t + 6t = 8-1
t = 7
2010-02-03T14:36:06+01:00
D) -2m + 7 = m - 6
-2m-m=-6-7
-3m= -13/: (-3)
m = 4 i 1/3
e) 6 -5x = 2x - 7
-5x-2x=-7-6
-7x=-13 /: (-7)
x= 1 i 6/7
f) -5t + 1 = 8 - 6t
-5t+6t= 8-1
t=7