x+7=15 y-1=6 z-4=-18 6x=-42
x+7 = 15 y -1 = 6 z -4 = 18 6x = 42
-7 -7 +1 +1 +4 +4 :6
x = 8 y = 7 z = 22 x = 7
licze na naj to jest na pewno dobrze bo mi pani sprawdzała
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x+7 = 15 y -1 = 6 z -4 = 18 6x = 42
-7 -7 +1 +1 +4 +4 :6
x = 8 y = 7 z = 22 x = 7
licze na naj to jest na pewno dobrze bo mi pani sprawdzała
x=8
y-1=6/+1
y=7
z-4=-18/+4
z=-14
6x=-42/:6
x=-7
jak chcesz wytlumaczenie mogw poprawic :-)