Question

Me ajudem com essa pergunta por favor????????

Answer 1

a)x+5=8

x=8-5

x=3

b)x-4=3

x=3+4

x=7

c)x+6=5

x=5-6

x=-1

d)x-7=-7

x=-7+7

x=0

e)x+9=-1

x=-1-9

x=-10

f)x+28=11

x=11-28

x=17

g)x-109=5

x=5+109

x=114

h)3x=15

x=15/3

5

i)2x=14

x=14/2

x=7

j)4x=-12

x=-12/4

x=-3

k)7x=-21

x=-21/7

x=-7

l)13x=13

x=13/13

x=1

m)9x=9

x=9/9

x=1