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-2x+3x=4-3
x=1
2) 3x -7 = 5x - 5
3x-5x=-5+7
-2x=2
x=-1
-2x + 3x = 4 - 3
x = 1
Sprawdzenie :
L = -2 * 1 + 3 = -2 + 3 = 1
P = -3 * 1 + 4 = -3 + 4 = 1
L = P
2) 3x -7 = 5x - 5
3x - 5x = -5 + 7
-2x = 2 / : ( -2 )
x = -1
Sprawdzenie :
L = 3 * ( - 1 ) - 7 = -3 - 7 = -10
P = 5 * ( - 1 ) - 5 = -5 - 5 = -10
L = P
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