Rozwiąż równanie i nierówność:
a) x-5=2x-9
b)1(x-26)=9+2x
c)3(x-2)=2(3x+1)-20
d)2(x-1)-3>1
x - 2x = -9 + 5
-x = -4
x = 4
x - 26 = 9 + 2x
x - 2x = 9 + 26
-x = 35
x = -35
3x - 6 = 6x + 2 - 20
3x - 6x = -18 + 6
-3x = -12
2x - 2 - 3 > 1
2x > 1 + 2 + 3
2x > 6 /:2
x > 3
a).
x-5 = 2x-9
-5+9 = 2x-x
4 = x
x =4
b).
1(x-26) = 9+2x
x-26 = 9+2x
-26-9 = 2x-x
-35 = x
c).
3(x-2) = 2(3x+1)-20
3x-6 = 6x+2-20
-6-2+20 = 6x-3x
12 = 3x /:3
d).
2(x-1)-3 > 1
2x-2-3 > 1
2x > 1+2+3
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a) x-5=2x-9
x - 2x = -9 + 5
-x = -4
x = 4
b)1(x-26)=9+2x
x - 26 = 9 + 2x
x - 2x = 9 + 26
-x = 35
x = -35
c)3(x-2)=2(3x+1)-20
3x - 6 = 6x + 2 - 20
3x - 6x = -18 + 6
-3x = -12
x = 4
d)2(x-1)-3>1
2x - 2 - 3 > 1
2x > 1 + 2 + 3
2x > 6 /:2
x > 3
a).
x-5 = 2x-9
-5+9 = 2x-x
4 = x
x =4
b).
1(x-26) = 9+2x
x-26 = 9+2x
-26-9 = 2x-x
-35 = x
x = -35
c).
3(x-2) = 2(3x+1)-20
3x-6 = 6x+2-20
-6-2+20 = 6x-3x
12 = 3x /:3
4 = x
x = 4
d).
2(x-1)-3 > 1
2x-2-3 > 1
2x > 1+2+3
2x > 6 /:2
x > 3