Odpowiedź:
a) -2 = x + 5
-2 - 5 = x
x = -7
b) 2 = x + 1
2 - 1 = x
x = 1 = 1
c) 5,3 = x - 1,4
5,3 + 1,4 = x
x = 6,7
d) 15 = -3x I (obustronnie dzielimy przez -3)
x = 15/(-3) = -5
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Odpowiedź:
a) -2 = x + 5
-2 - 5 = x
x = -7
b) 2 = x + 1
2 - 1 = x
x = 1 = 1
c) 5,3 = x - 1,4
5,3 + 1,4 = x
x = 6,7
d) 15 = -3x I (obustronnie dzielimy przez -3)
x = 15/(-3) = -5