Question

Calcule o valor das equações

a) 6x = 2x + 16
b) 2x - 5 = x + 1
c) 2x + 3 = x + 4
d) 5x + 7 = 4x + 10
e)4x - 10 = 2x + 2​

Answer 1

$a) 6x = 2x + 16 \\ 6x - \: 2x \: = \: 16 \\ 4x = 16 \\ x = \frac{16}{4} \\ x=4 \\ \\ b) 2x - 5 = x + 1 \\ 2x - x = 1 + 5 \\ x = 1 + 5 \\ x = 6 \\ \\ c) 2x + 3 = x + 4 \\2x - x = 4 - 3 \\ x = 4 - 3 \\ x = 1 \\ \\ d) 5x + 7 = 4x + 10 \\ 5x - 4x = 10 - 7 \\ x = 10 - 7 \\ x = 3 \\ \\ e)4x - 10 = 2x + 2 \\ 4x - 2x = 2 + 10 \\ 2x = 12 \\ x = \frac{12}{2} \\ x = 6$