rozwiąż równania a)1/2x+5=x+8 b)2-x=5-2x c)69-x=x+9x-25 d)(-5x)+3-(-x+8)=x prosze o wytłumaczenie pliss WAZNE
a) 1/2x+5=x+8
1/2x -x = 8-5
- 1/2 x = 3 / * (-2)
x = -6
b) 2 - x = 5-2x
-x + 2x=5-2
x=3
c)69 - x=x+9x-25
69+25=11x
11x=94
x = 8,54
d) (-5x)+3-(-x+8)=x
3-8=x+5x-x
-5=5x
x = -1
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a) 1/2x+5=x+8
1/2x -x = 8-5
- 1/2 x = 3 / * (-2)
x = -6
b) 2 - x = 5-2x
-x + 2x=5-2
x=3
c)69 - x=x+9x-25
69+25=11x
11x=94
x = 8,54
d) (-5x)+3-(-x+8)=x
3-8=x+5x-x
-5=5x
x = -1