Answers

2015-11-17T21:40:16+08:00
1. x-72=-95
    x=-95+72
    x=23

2. 8x-9x=48
    x=48

3. -7x=140
     -7x/-7=140/-7
     x=-14

4.  i don't know this
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  • Brainly User
2015-11-18T00:17:58+08:00
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)  
 \frac{4}{7} x = - 28
      (\frac{7}{4})( \frac{4}{7} ) x = - 28 (\frac{7}{4})
     x = (-7) (7)
     x = - 49
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