Odpowiedź:
-2x + 3 = 2x - 9
-2x - 2x = -9 - 3
-4x = -12 / : -4
x = 3
-x + 8 = -3x - 10
-x + 3x = -10 -8
2x = - 2 / : 2
x = 0 ( równanie sprzeczne)
-4x-1 = 6x + 4
-4x - 6x = 4 + 1
-10x = 5 / -10
x = 5/10 inaczej 1/2
7x + 3 = 10x +21
7x - 10x = 21 - 3
-3x = 18 / : -3
x = 6
-2x + 1 = 3x - 3
-2x -3x = -3 - 1
-5x = -4 / ; -5
x = -4/-5
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Odpowiedź:
-2x + 3 = 2x - 9
-2x - 2x = -9 - 3
-4x = -12 / : -4
x = 3
-x + 8 = -3x - 10
-x + 3x = -10 -8
2x = - 2 / : 2
x = 0 ( równanie sprzeczne)
-4x-1 = 6x + 4
-4x - 6x = 4 + 1
-10x = 5 / -10
x = 5/10 inaczej 1/2
7x + 3 = 10x +21
7x - 10x = 21 - 3
-3x = 18 / : -3
x = 6
-2x + 1 = 3x - 3
-2x -3x = -3 - 1
-5x = -4 / ; -5
x = -4/-5