Answers

  • Brainly User
2015-11-17T01:08:12+08:00
x - (3x + 5) = 7 - 5x
x + (-3x - 5) = 7 - 5x
-2x - 5 = 7 - 5x
-2x + 5x = 7 + 5
3x = 12
3x/3 = 12/3

x = 4

Check: x = 4
x - (3x + 5) = 7 - 5x
4 - [ (3)(4) + 5 ] = 7 - 5(4)
4 - (12 + 5) = 7 - 20
4 - 17 = - 13
-13 = - 13
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