rozwiąż równania
a 10x+15=-5
b 6x+8=4x+20
c 9y-11=6y+7
d -w-12=-33-22
e -13m+21=-9-7
f 5z+4+9s-6
g 8s-1=9s-6
h 15z+24=5z-5
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a 10x+15=-5
10x=-20 /:10
x=-2
b 6x+8=4x+20
2x=12 /:2
x=6
c 9y-11=6y+7
3y=18 /:3
y=6
d -w-12=-33-22
-w=-55+12
w=43
e -13m+21=-9-7
-13m=-37 /:(-13)
m=37/13
f 5z+4+9s-6
g 8s-1=9s-6
-s=-5
s=5
h 15z+24=5z-5
10z=-29 /:10
z=-2,9