Question

Calcule o valor de x com ecuação

a)x+5=7

b)x+12=10

c)x-5=6

d)9x=27

e)x/4=6

f)16x=-32

g)0,7x=1,4

h)-5x=30

i)x/-2=5

j)x/-4=-6

Answer 1

a)x+5=7

x = 7 - 5

x = 2

b)x+12=10

x = 10 -12

x = -2

c)x-5=6

x = 6 + 5

x = 11

d)9x=27

9x = 27

x = 27/9

x = 3

e)x/4=6

x = 6 . 4

x = 24

f)16x=-32

x = -32/16

x= -2

g)0,7x=1,4

x = 1,4/0,7

x = 2

h)-5x=30

-x = 30/5

-x = 6 .(-1)

x = -6

i)x/-2=5

x = -2 . 5

x = -10

j)x/-4=-6

x = -6 . -4

x = 24

espero ter ajudado, bons estudos.