Question

b) Qual expressão algébrica corresponde a esse contexto? *
10 pontos
2x = 60
3 + x = 60
3x = 60
60 = x+3
x+20 = 30

Answer 1

Resposta:

A) 2 x - 60 = 0

( 2 ) ⋅ x + ( - 60 ) = 0

x =- ( - 60 )2

x = -( 2 )⋅ ( - 30 )( 2 )= 30

B) ( x + 3 ) - { 60 } = 0

x - 57 = 0

( 1 ) ⋅ x + ( - 57 ) = 0

x =- ( - 57 )1

x = 57

C)  3 x - 60 = 0

( 3 ) ⋅ x + ( - 60 ) = 0

x =- ( - 60 )3

x = -( 3 )⋅ ( - 20 )( 3 )= 20

D)  - x + 57 = 0

( - 1 ) ⋅ x + ( 57 ) = 0

x =- ( 57 )- 1

x = 57

E)  x - 10 = 0

( 1 ) ⋅ x + ( - 10 ) = 0

x =- ( - 10 )1

x = 10