Odpowiedź:
a)
2x + 3 = 27
2x = 27 - 3
2x = 24 /: 2
x = 12
Sprawdzenie:
2 • 12 + 3 = 27
24 + 3 = 27
27 = 27
L = P
b)
9x - 8 = 55
9x = 55 + 8
9x = 63 /: 9
x = 7
9 • 7 - 8 = 55
63 - 8 = 55
55 = 55
a) x = 12
2 * 12 + 3 =27
b) x = 7
9 * 7 - 8 = 55
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Odpowiedź:
a)
2x + 3 = 27
2x = 27 - 3
2x = 24 /: 2
x = 12
Sprawdzenie:
2 • 12 + 3 = 27
24 + 3 = 27
27 = 27
L = P
b)
9x - 8 = 55
9x = 55 + 8
9x = 63 /: 9
x = 7
Sprawdzenie:
9 • 7 - 8 = 55
63 - 8 = 55
55 = 55
L = P
Odpowiedź:
a) x = 12
2 * 12 + 3 =27
b) x = 7
9 * 7 - 8 = 55
Szczegółowe wyjaśnienie: