Rozwiąż równanie: a) 2x + 5 = 14,8 + (x - 3) c) 2 (3 - x) - 4 (x - 5) = 2x + 2 e) 0,2 · (10 - 5x) = 3 + 2 (x - 1) f) 37 = (20 - 4x) · 0,5 - 7x
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a) 2x + 5 = 14,8 + x - 3
2x - x = 14,8 -3 - 5
x = 6,8
c) 6 - 2x - 4x + 20 = 2x + 2
-2x - 4x -2x = 2- 6-20
-8x = - 24 | : (-8)
x= 3
e) 2 - x = 3 + 2x -2
-x- 2x = 3 - 2 -2
- 3x = -1
x= 1/3
a)2x+5=14,8+(x-3)
2x+5=14,8+x-3
x=6,8
c)2(3-x)-4(x-5)=2x+2
6-2x-4x+20=2x+2
24=8x | 8
3=x
e)0,2*(10-5x)=3+2(x-1)
2-x=3+2x-2
-3x=-1 | (-3)
x=⅓
f)37=(20-4x)*0,5-7x
37=10-2x-7x
27=-9x | -9
-3=x
Pozdrawiam :]