Question

1)De o conjunto solução
a)x+10=14
b)x-20=15
c)x-1=2
d)x-2=4
e)x+11=20
f)4x+4=2x-3

Answer 1

a)

x + 10 = 14
x = 14 - 10
x = 4

S = {4}

b)

x - 20 = 15
x = 15 + 20
x = 35

S = {35}

c) 

x - 1 = 2
x = 2 + 1
x = 3

S = {3}

d) 

x - 2 = 4
x = 4 + 2
x = 6

S = {6}

e) 

x + 11 = 20
x = 20 - 11
x = 9

S = {9}

f) 

4x + 4 = 2x - 3
4x - 2x = - 3 - 4
2x = - 7
x = -7/2

S = {-7/2}