Odpowiedź:
c)
-2x + 2 = -7
-2x = -7 - 2
-2x = -9 /: (-2)
x = 4,5
f)
-3x + 4 = -5x - 1
-3x + 5x = -1 - 4
2x = -5 /: 2
x = -2,5
c) -2x+2=-7
-2x= -7-2
-2x= -9
x= 9/2
x= 4 1/2
f) -2x +4= -5x -1
-3x+5x= -1-4
2x= -5
x= -5/2
x= -2 1/2
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Odpowiedź:
c)
-2x + 2 = -7
-2x = -7 - 2
-2x = -9 /: (-2)
x = 4,5
f)
-3x + 4 = -5x - 1
-3x + 5x = -1 - 4
2x = -5 /: 2
x = -2,5
Odpowiedź:
c) -2x+2=-7
-2x= -7-2
-2x= -9
x= 9/2
x= 4 1/2
f) -2x +4= -5x -1
-3x+5x= -1-4
2x= -5
x= -5/2
x= -2 1/2