1) x - 72 = - 95
x = - 95 + 72
x = - 23
2) 8x - 9x = 48
- x = 48
-x/-1 = 48/-1
x = - 48
3) -7x = 140
-7x/-7 = 140/-7
x = - 20
4) [tex] \frac{4}{7} [/tex]x = - 28
[tex] (\frac{7}{4})( \frac{4}{7} ) [/tex]x = - 28[tex] (\frac{7}{4}) [/tex]
x = (-7) (7)
x = - 49
