Question

1-Descubra o valor de X
a)5×+8=3×+20
b)10-2×=×+6
c)×-2×=20-30
d)7×-10+20=5×
Me socorramm​

Answer 1

Resposta:

OLÁ

a)5×+8=3×+20

5x-3x+8=20

5x-3x=20-8

2x=20-8

2x=12

x=12/2

x=6

b)10-2×=×+6

10-2x-x=6

-2x-x=6-10

-3x= -4

x= -4/-3

x= 4/3

c)×-2×=20-30

-x=20-30

-x= -10

multiplique por -1

x=10

d)7×-10+20=5×

7x+10=5x

7x=5x-10

7x-5x=-10

2x=-10

x= -10/2

x= -5

Explicação passo-a-passo:

espero ter ajudado