Rozwiąż i sprawdź.
1. 5 - 10x = - 2 x
Rozwiązanie:
5=-2x+10x
5=8x/:8
⅝=x
Sprawdzenie:
5-10*⅝=-2*⅝
5-6¼=-1¼
-1¼=-1¼
5 - 10x = -2x
-10x + 2x = -5
-8x = -5 /:(-8)
x = 5/8
spr.
L = 5 - 10x = 5 - 10 * 5/8 = 5 - 50/8 = 40/8 - 50/8 = -10/8 = -5/4
P = -2 * x = -2 * 5/8 = -10/8 = -5/4
L = P
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Rozwiązanie:
5=-2x+10x
5=8x/:8
⅝=x
Sprawdzenie:
5-10*⅝=-2*⅝
5-6¼=-1¼
-1¼=-1¼
5 - 10x = -2x
-10x + 2x = -5
-8x = -5 /:(-8)
x = 5/8
spr.
L = 5 - 10x = 5 - 10 * 5/8 = 5 - 50/8 = 40/8 - 50/8 = -10/8 = -5/4
P = -2 * x = -2 * 5/8 = -10/8 = -5/4
L = P