Question

alguem pode me ajudar ?

Answer 1

Resposta

4-

a)x+5=8

x=8-5

x=3

b)x-4=3

x=3+4

x=7

c)5x+6=5+4x

5x-4x=5-6

x=-1

d)3x-7=-7

3x=-7+7

x=0/7

x=0

e)x+9=-1

x=-1-9

x=-10

f)x+28=11

x=11-28

x=17

g)2x-109=5

2x=5+109

2x=114

x=114/2

x=57

h)x-39=-79

x=-79+39

x=-40

i)10=x+8

x+8=10

x=10-8

x=2

j)15=x+20

x+20=15

x=15-20

x=-5

k)4=x-10

x-10=4

x=4+10

x=14

l)7=x+8

x+8=7

x=7-8

x=-1

m)0=x+12

x+12=0

x=-12

n)-3=x+10

x+10=-3

x=-3-10

x=-13