nie wiem jak rozwiązać : 2-x=5-2x , 69 - x = x+96 , 1/2 c + 5 = c + 8Z góry dzięki ! A, i to na jutro !!! :)
2-x=5-2x
-x+2x=5-2
x=3
69 - x = x+96
-x-x=96-69
-2x=27 /:(-2)
x=-13,5
1/2 c + 5 = c + 8
1/2c-c=8-5
-1/2c=3 /:(-1/2)
c=3*(-2/1)
x=-6
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2-x=5-2x
-x+2x=5-2
x=3
69 - x = x+96
-x-x=96-69
-2x=27 /:(-2)
x=-13,5
1/2 c + 5 = c + 8
1/2c-c=8-5
-1/2c=3 /:(-1/2)
c=3*(-2/1)
x=-6