Question

DETERMIME O VALOR DESCONHECIDO DE CADA CASO. ME AJUDE

Answer 1

a) -8 – x = 4
–x = 4+8
x= -12
b)-16 –x = -7
x=–16+7
x=–9
c)x–(-8)=4
x+8=4
x= –4
d)x–9= –12
x= –3
e) x+x=0
2x=0
x=0
Respostas:
a)-12
b)-9
c)-4
d)–3
e)0