Question

Como resolver . 3x-8=x+16 , -36+15=+x-3x+2 e x÷2=-2x+8

Answer 1

$3x - 8 = x + 16 \\ 3x - x = 16 + 8 \\ 2x = 24 \\ x = \frac{24}{2} \\ x = 12$


$- 36 + 15 = x - 3x + 2 \\ - 2x = - 23 \\ x = \frac{ - 23}{ - 2} \\ x = 11.5$

$\frac{x}{2} = - 2x + 8 \\ \frac{x}{2} = \frac{ - 4x}{2} + \frac{16}{2} \\ x = - 4x + 16 \\ x + 4x = 16 \\ 5x = 16 \\ x = \frac{16}{5} \\ x = 3.2$