Question

2) Resolva as seguintes equações, sendo U = Q:
a) 10 = x + 8
b) 15 = x + 20
c) 4 = x – 10
d) 7 = x + 8
e) 0 = x + 12
f) - 3 = x + 10
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Answer 1

a) passa o 8 subtraindo
x = 10 - 8 => x = 2

b) x= 15-20 => x=-5

c) x = 4+10 => x=14

d) x= 7+8 = 15

e) x = -12

f) x= -3+10 = 7