zadania f) do o), na wzor z obrazka z zeszytu.
f)y-1/2=-1-1/2
y=-1
spr:
-1-1/2=-1-1/2
g) 0,4a-1,4=-0,2
0,4a=1,2 |2.5
a=3
spr: 0,4*3-1,4=-0,2 1,2-1,4=0,2
h)9=b/2-2
11=b/2
22=b
spr
9=22/2-2
9=11-2 9=9
i) -c-6,8=-7,8
-c=-1,8
c=1,8
spr -1,8-6,8=-7,8
j) 12/7=-2-2/7t
12=-14-2t
t=-8
spr 12/7=-2-2/7*-8
12=-14+16
12=12
k) 8-20=3-4x
-15=-4x
x=15/4
spr 8-20=3-15/4*4
-12=3-15
-12=-12
l)9-12x=21-60
9-12x=-39
-12x=-48
x=4
9-48=-39
-39=-39
m)24-2=11x-11
22=11x-11
33=11x
x=11
22=33-11
22=22
n) x-20=-30+8
x=-2
-2-20=-22
-22=22
o)-27+3x=40-100
-27+3x=-60
3x=-33
x=-11
spr -27-33=-60
-60=-60
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f)y-1/2=-1-1/2
y=-1
spr:
-1-1/2=-1-1/2
g) 0,4a-1,4=-0,2
0,4a=1,2 |2.5
a=3
spr: 0,4*3-1,4=-0,2 1,2-1,4=0,2
h)9=b/2-2
11=b/2
22=b
spr
9=22/2-2
9=11-2 9=9
i) -c-6,8=-7,8
-c=-1,8
c=1,8
spr -1,8-6,8=-7,8
j) 12/7=-2-2/7t
12=-14-2t
t=-8
spr 12/7=-2-2/7*-8
12=-14+16
12=12
k) 8-20=3-4x
-15=-4x
x=15/4
spr 8-20=3-15/4*4
-12=3-15
-12=-12
l)9-12x=21-60
9-12x=-39
-12x=-48
x=4
spr
9-48=-39
-39=-39
m)24-2=11x-11
22=11x-11
33=11x
x=11
spr
22=33-11
22=22
n) x-20=-30+8
x=-2
spr
-2-20=-22
-22=22
o)-27+3x=40-100
-27+3x=-60
3x=-33
x=-11
spr -27-33=-60
-60=-60
chyba o to chodzilo?