8) sprawdzi czy liczba -4 spełnia podane równanie. ZAZNACZ TAK LUB NIE
b) -8x+4 =-5x+16
L=...........
P=........... TAK/NIE
C) 2(X+6)=-4
L=...........
P=..........
TAK/NIE
D) 5-X =2x+9
L=............
P=...........
TAK / NIE DAJE NAJ ZA NAJLEPSZA ODPOWIEDZI
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b)
-8x+4=-5x+16
L= -8(-4) + 4 = 32 + 4 = 36
P= -5(-4) + 16 = 20 + 16 = 36 Tak
c)
2(x + 6)= -4
2x+12 = -4
L = 2(-4) + 12 = -8 + 12 = 4
P = -4 Nie
d)
5-x = 2x +9
L = 5 - (-4) = 5 + 4 = 9
P = 2(-4) + 9 = -8 + 9 = 1 Nie
b)
-8x+4=-5x+16
L= -8(-4) + 4 = 32 + 4 = 36
P= -5(-4) + 16 = 20 + 16 = 36 Tak
c)
2(x + 6)= -4
2x+12 = -4
L = 2(-4) + 12 = -8 + 12 = 4
P = -4 Nie
d)
5-x = 2x +9
L = 5 - (-4) = 5 + 4 = 9
P = 2(-4) + 9 = -8 + 9 = 1 Nie