Question

ayuda necesito usar las operaciones inversas

2x-7=9

6x=57

3x + 1 = x+5​​

Answer 1

Respuesta:

$2x - 7 = 9 \\ 2x - 7 + 7 = 9 + 7 \\ 2x = 16 \\ \frac{2x}{2} = \frac{16}{2} \\ x = 8$

$6x = 57 \\ \frac{6x}{6} = \frac{57}{6} \\ x = \frac{57}{6}$

$3x + 1 = x + 5 \\ 3x + 1 - 1 = x + 5 - 1 \\ 3x = x + 4 \\ 3x - x = x + 4 - x \\ 2x = 4 \\ \frac{2x}{2} = \frac{4}{2} \\ x = 2$