Odpowiedź:
Szczegółowe wyjaśnienie:
a)-3x+8=14
-3x=14-8
-3x=6/-3
x=-2
b)2x-14=24
2x=24+14
2x=38/2
x=19
c)-5x-5=45
-5x=45+5
-5x=50/(-5)
x=-10
d)4x+6=10
4x=10-6
4x=4/4
x=1
e)7x+5=40
7x=40-5
7x=35/7
x=5
f)8x-9=18
8x=18+9
8x=27/8
x=3 3/8
g)-2x+16=30
-2x=30-16
-2x=4/(-2)
h)5x-13=22
5x=22+13
5x=35/5
x=7
i)-5x+16=-14
-5x=-14-16
-5x=-30/(-5)
x=6
j)3x-19=11
3x=11+19
3x=30/3
x=10
k)-4x-14=11
-4x=11+14
-4x=25/-4
x=-8 1/4
l)2x+18=14
2x=14-18
2x=-4/2
m)3x+12=6
3x=6-12
3x=-6/3
n)-4x+9=49
-4x=49-9
-4x=40/(-4)
a)
- 3x + 8 = 14
-3x = 14 - 8 /:(-3)
x = -6/3 = -2
b)
2x - 14 = 24
2x = 24 + 14 /:2
x = 38/2 = 19
c)
- 5x - 5 = 45
-5x = 45 + 5 /:(-5)
x = -50/5 = -10
d)
4x + 6 = 10
4x = 10 - 6 /:4
x = 4/4 = 1
e)
7x + 5 = 40
7x = 40 - 5 /:7
x = 35/7 = 5
f)
8x - 9 = 18
8x = 18 + 9 /:8
x = 27/8 = 3 3/8
g)
- 2x + 16 = 30
-2x = 30 - 16 /:(-2)
x = -14/2 = -7
h)
5x - 13 = 22
5x = 22 + 13 /:5
x = 35/5 = 7
i)
- 5x + 16 = -14
-5x = -14 - 16 /:(-5)
x = 30/5 = 6
j)
3x - 19 = 11
3x = 11 + 19 /:3
x = 30/3 = 10
k)
- 4x - 14 = 11
-4x = 11 + 14 /:(-4)
x = -25/4 = -6 1/4
l)
2x + 18 = 14
2x = 14 - 18 /:2
x = -4/2 = -2
m)
3x + 12 = 6
3x = 6 - 12 /:3
n)
- 4x + 9 = 49
-4x = 49 - 9 /:(-4)
x = -40/4 = -10
o)
- 3x - 11 = - 34
-3x = -34 + 11 /:(-3)
x = 23/11 = 2 1/11
p)
4x + 4 = -24
4x = -24 - 4 /:4
x = -28/4 = -7
r)
- 9x + 6 = - 48
-9x = -48 - 6 /:(-9)
x = 54/9 = 6
s)
- 3x - 10 = -24
-3x = -24 + 10 /:(-3)
x = 14/3 = 4 2/3
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Odpowiedź:
Szczegółowe wyjaśnienie:
a)-3x+8=14
-3x=14-8
-3x=6/-3
x=-2
b)2x-14=24
2x=24+14
2x=38/2
x=19
c)-5x-5=45
-5x=45+5
-5x=50/(-5)
x=-10
d)4x+6=10
4x=10-6
4x=4/4
x=1
e)7x+5=40
7x=40-5
7x=35/7
x=5
f)8x-9=18
8x=18+9
8x=27/8
x=3 3/8
g)-2x+16=30
-2x=30-16
-2x=4/(-2)
x=-2
h)5x-13=22
5x=22+13
5x=35/5
x=7
i)-5x+16=-14
-5x=-14-16
-5x=-30/(-5)
x=6
j)3x-19=11
3x=11+19
3x=30/3
x=10
k)-4x-14=11
-4x=11+14
-4x=25/-4
x=-8 1/4
l)2x+18=14
2x=14-18
2x=-4/2
x=-2
m)3x+12=6
3x=6-12
3x=-6/3
x=-2
n)-4x+9=49
-4x=49-9
-4x=40/(-4)
x=-10
Odpowiedź:
a)
- 3x + 8 = 14
-3x = 14 - 8 /:(-3)
x = -6/3 = -2
b)
2x - 14 = 24
2x = 24 + 14 /:2
x = 38/2 = 19
c)
- 5x - 5 = 45
-5x = 45 + 5 /:(-5)
x = -50/5 = -10
d)
4x + 6 = 10
4x = 10 - 6 /:4
x = 4/4 = 1
e)
7x + 5 = 40
7x = 40 - 5 /:7
x = 35/7 = 5
f)
8x - 9 = 18
8x = 18 + 9 /:8
x = 27/8 = 3 3/8
g)
- 2x + 16 = 30
-2x = 30 - 16 /:(-2)
x = -14/2 = -7
h)
5x - 13 = 22
5x = 22 + 13 /:5
x = 35/5 = 7
i)
- 5x + 16 = -14
-5x = -14 - 16 /:(-5)
x = 30/5 = 6
j)
3x - 19 = 11
3x = 11 + 19 /:3
x = 30/3 = 10
k)
- 4x - 14 = 11
-4x = 11 + 14 /:(-4)
x = -25/4 = -6 1/4
l)
2x + 18 = 14
2x = 14 - 18 /:2
x = -4/2 = -2
m)
3x + 12 = 6
3x = 6 - 12 /:3
x = -6/3 = -2
n)
- 4x + 9 = 49
-4x = 49 - 9 /:(-4)
x = -40/4 = -10
o)
- 3x - 11 = - 34
-3x = -34 + 11 /:(-3)
x = 23/11 = 2 1/11
p)
4x + 4 = -24
4x = -24 - 4 /:4
x = -28/4 = -7
r)
- 9x + 6 = - 48
-9x = -48 - 6 /:(-9)
x = 54/9 = 6
s)
- 3x - 10 = -24
-3x = -24 + 10 /:(-3)
x = 14/3 = 4 2/3
Szczegółowe wyjaśnienie:
Szczegółowe wyjaśnienie: