Question

Alguém saber ????????​

Answer 1

Resposta:

a) x = 7

b) x = -1

c) x = 0

d) x = -10

e) x = -17

f) x = 114

g) x = -40

h) x = 2

i) x = -5

j) x = 14

k) x = -1

l) x = -12

m) x = -13

Explicação passo-a-passo:

a)

$x-4=3\\x-4+4=3+4\\x=7$

b)

$x+6=5\\x+6-6=5-6\\x=-1$

c)

$x-7=-7\\x-7+7=-7+7\\x=0$

d)

$x+9=-1\\x+9-9=-1-9\\x=-10$

e)

$x+28=11\\x+28-28=11-28\\x=-17$

f)

$x-109=5\\x-109+109=5+109\\x=114$

g)

$x-39=-79\\x-39+39=-79+39\\x=-40$

h)

$10=x+8\\x+8=10\\x+8-8=10-8\\x=2$

i)

$15=x+20\\x+20=15\\x+20-20=15-20\\x=-5$

j)

$4=x-10\\x-10=4\\x-10+10=4+10\\x=14$

k)

$7=x+8\\x+8=7\\x+8-8=7-8\\x=-1$

l)

$0=x+12\\x+12=0\\x+12-12=0-12\\x=-12$

m)

$-3=x+10\\x+10=-3\\x+10-10=-3-10\\x=-13$