Odpowiedzi

2010-04-08T16:17:17+02:00
A) -2m+7=m-6
-2m-m=-6-7
-3m=-13 /÷(-3)
m=4 i 1/3
b)6-5x=2x-7
6+7=2x+5x
13=7x
x=1 i 6/7
c)-5t+1=8-6t
-5t+6t=8-1
t=7
2010-04-08T16:18:28+02:00
A) -2m+7=m-6
-2m-m= -6-7
-3m= -13/:(-3)
m=4⅓
B) 6-5x=2x-7
-5x-2x=-7-6
-7x=-13/:(-7)
x=1 6/7
C) -5t+1=8-6t
-5t+6t=8-1
t=7/:1
t=7