Question

Equações:

a) X+1=9

b)X-2=8

c)X-8=10

d)X+3=3

e)2X=16

f)5X=-15

g)20X=100

h)7X=-42

i)X=-4
3

j) X=8
2

k)X=2
4

​

Answer 1

Explicação passo-a-passo:

a)x+1=9

x=9-1

x=8

b)x-2=8

x=8+2

x=10

c)x-8=10

x=10+8

x=18

d)x+3=3

x=3-3

x=0

e)2x=16

x=16/2

x=8

f)5x=-15

x=-15/5

x=-3

g)20x=100

x=100/20

x=5

h)7x=-42

x=-42/7

x=-6

i)x/3=-4

x=-4*3

x=-12

j)x/2=8

x=8*2

x=16

k)x/4=2

x=2*4

x=8