Question

2 . ( x + 2 ) + 3 . ( x + 3 ) = 4 . ( x + 4 ) ​

Answer 1

Aplicar a distributiva:

2 . ( x + 2 ) + 3 . ( x + 3 ) = 4 . ( x + 4 )

2 . x + 2 . 2 + 3 . x + 3 . 3 = 4 . x + 4 . 4

2x + 4 + 3x + 9 = 4x + 16

Resolver a equação:

2x + 4 + 3x + 9 = 4x + 16

5x + 13 = 4x + 16

5x - 4x = 16 - 13

x = 3