Rozwiąż równaia:
a) 5-2(2-x)=3
b)0,5(2x-4)+4 = -x+2
c)2x+2(x-1)= 3x-2
d) 3x-2(x-1)=3
e) 2(x-0,5)+3=x-5
f) 1,5(x+2)= -0,5x+1
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a)
5-2(2-x) = 3
5- 4+2x = 3
2x = 3 - 5 + 4
2x = 6 / 2
x = 3
b)
0,5(2x-4)+4 = -x+2
x-2+4 = -x+2
x+x = 2+2-4
2x = 0
x = 0
c)
2x+2(x-1) = 3x-2
2x+2x-2 = 3x-2
4x-2 = 3x-2
4x-3x = -2+2
x=0
d)
3x-2(x-1) = 3
3x-2x+2 = 3
x = 3-2
x=1
e)
2 (x-0,5) + 3 = x - 5
2x-1+3 = x - 5
2x-x = -5 + 1- 3
x= -7
f)
1,5 (x+2) = -0,5x + 1
1,5x + 3 = -0,5 + 1
1,5x + 0,5x = 1-3
2x = -2
x = -1
a) 5-2(2-x) =3
5 -4 + 2x =3
2x = 3 -5 +4
2x = 2 /:2
x = 1
b) 0,5(2x-4)+4= -x +2
x - 2 + 4= -x +2
x + x = 2 +2 - 4
2 x = 0
c) 2x+2 (x-1)= 3x -2
2x +2x-2 = 3x -2
2x + 2x - 3x = -2 +2
x = 0
d) 3x -2(x-1) = 3
3x - 2x +2 = 3
3x -2x = 3 -2
x = 1
e) 2(x -0,5)+3 = x -5
2x - 1 +3 = x -5
2x - x = -5 +1 -3
x = - 7
f) 1,5 (x+2)= -0,5 x +1
1,5 x + 3 = - 0,5x + 1
1,5 x +0,5x = 1 -3
2x = -2 /:2
x = - 1