Question

o mais rápido possível por favor​

Answer 1

Muito boa noite, jovem :)

a) x - 3 = 5

x = 5 + 3

x = 8

b) x + 2 = 7

x = 7 - 2

x = 5

c) x - 7 = -7

x = -7 + 7

x = 0

d) x + 9 = -1

x = -1 - 9

x = - 10

e) 15 = x + 1

x = 15 - 1

x = 14

f) 4 = x - 10

x = 4 + 10

x = 14

g) -3 = x + 10

x = - 3 - 10

x = - 13

h) 3.x = 12

x = 12 / 3

x = 4

i) 9.x = -9

x = - 9 / 9

x = - 1

j) 2.x / 3 = -10

2.x = -10.(3)

2.x = -30

x = -30 / 2

x = - 15

k) 3.x / 4 = 30

3.x = 30.(4)

3.x = 120

x = 120 / 3

x = 40

l) -x = 9

x = - 9

m) -x = - 2

x = 2

n) 3.x - 4 = 2.x + 8

3.x - 2.x = 8 + 4

x = 12

o) 7.x - 2 + 4 = 10 + 5.x

7.x - 5.x = 10 - 4 + 2

2.x = 12 - 4

2.x = 8

x = 8 / 2

x = 4

p) 6.x = 2.x + 16

6.x - 2.x = 16

4.x = 16

x = 16 / 4

x = 4

q) 5.x + 7 = 4.x + 10

5.x - 4.x = 10 - 7

x = 3

r) 3.x - 2 = 4.x + 9

3.x - 4.x = 9 + 2

-x = 11

x = - 11

s) 4.(x + 3) = 1

4.x + 12 = 1

4.x = 1 - 12

4.x = -11

x = -11 / 4