Question

1) 9x-3=5x 2)17x+50=7x 3)17x-12=9x+16 4) 5(x+12)-3(x+16)=40. qual o valor de x em todas as questões

Answer 1

Olá,

Vamos lá,

1) 9x-3=5x
9x -5x = 3
4x = 3
x = 3/4


2)17x+50=7x
17x - 7x = -50
10x = -50
x = -50/10
x = -5


3)17x-12=9x+16
17x -9x = 16 +12
8x = 28
x = 28/8
x = 3,5


4) 5(x+12)-3(x+16)=40.
5x + 60 -3x - 48 = 40
5x -3x = 40 +48 - 60
2x = 28
x = 28/2
x = 14