Question

sendo U=Z determine o conjunto verdadeiras das equaçoes:
a) x+2=12
b)x+15=27
c)x+7=0
d)x+2=-5
e)x-10=1
f)x-5=0
g)x-20=-10
h)x-35=35

Answer 1

A-)
x= 12-2
X= 10
B)
x=27-15
X=12
C)
X=0-7
X=-7
D)
X=-5-2
X=-7
E)
X=1+10
X=11
F)
X=0+5
X=5
G)
X=-10+20
X=10
H)
X=35+35
X=70