rozwiąrz równania
-8w+5=19
-6w-10=14
-5s-12=-42
9y-7=5y+5
-8w+5=19 /-5
-8w=14 /:(-8)
w= -14/8
-6w-10=14 /+10
-6w=24 / : (-6)
w= -4
-5s-12=-42 /+12
-5s= -30 /(-5)
s= 6
9y-7=5y+5/+7
9y=5y+12 /-5y
4y=12 / :4
y= 3
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-8w+5=19 /-5
-8w=14 /:(-8)
w= -14/8
-6w-10=14 /+10
-6w=24 / : (-6)
w= -4
-5s-12=-42 /+12
-5s= -30 /(-5)
s= 6
9y-7=5y+5/+7
9y=5y+12 /-5y
4y=12 / :4
y= 3