Sprawdź czy liczba -4 spełnia podane równania. Zaznacz TAK lub NIE
a) 3x + 7 = -5
L = __________________
P = ___________________ TAK / 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
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a) 3x + 7 = -5
L = 3*(-4)+7 = -12+7=-5
P = -5 TAK
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
L = 2(-4+6) = 2*2 =4
P = -4 nie
d) 5 - x = 2x + 9
L = 5-(-4)=5+4=9
P = 2(-4)+9 = -8+9 = 1 Nie