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-8z = -6 + 7
-8z = 1 / : (-8)
z = - ⅛
b) 25m - 3 = 24m - 4
25m - 24m = -4 + 3
m = (-1)
c) -s + 15 = 4s - 14
-5s = -14 - 15
-5s = -29 / : (-5)
s = 5⅘
d) 17y + 28 = 19y + 27
-2y = -1 / : (-2)
y = ½
e) 8k - 19 = 8k + 19
8k - 8k = 19 + 19
0 = 38
Równanie sprzeczne
Mam nadzieję że pomogłam ^^