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b)y=2,6
c) z=-1
d) u=-2
e)y=-5
f) w=1/2
g) a=0
h) b=-8
i) c=-3
dasz naj
na pewno mam dobrze
moje jest ok i z rozwiazaniem a nie same odpowiedzi;) pozdrawiam :P
a) 1/7x=-2
x = 2 * 7
x = 14
b)5y = 13
y = 13:5
y = 2 3/5
c) -3/4z = 3/4
z = 3/4 : (-3/4)
z = -1
d) -1/6u = 1/3
u = 1/3 : (-1/6)
u = -2
e) y * 12 = -60
y = -60 : 12
y = 5
f) -2w = -1/2
w = -1/2 * (-2)
w = 1
g) 5a = 0
a = 0
h) -7b = 7/8
b = 7/8 : (-7)
b = -8
i) 22(-c)= -66
-22c = -66 /:(-22)
c = 3