Question

1)m-5=-1
2)3x=-15
3)10z+9=7z-12​

Answer 1

Explicación paso a paso:

$m = - 1 + 5 \\ m = 4 \\ \\ 3x = - 15 \\ x = \frac{ - 15}{3} \\ x = - 5 \\ \ \\ \ 10z + 9 = 7z - 12 \\ 10z - 7z = - 12 - 9 \\ 3z = - 21 \\ z = \frac{ - 21}{3} \\ z = - 7$