Resposta :
A) X = 8 - 5
X = 3
B) 2x= 16 - 4
2x = 12
X = 12/2
X = 6
C) 9x - 4x = 18 - 2
5x = 16
X = 3,5
D) 4x + 3x = 10 + 18
7x = 28
X = 4
X = 3
B) 2x= 16 - 4
2x = 12
X = 12/2
X = 6
C) 9x - 4x = 18 - 2
5x = 16
X = 3,5
D) 4x + 3x = 10 + 18
7x = 28
X = 4