Explicación paso a paso: (izi)
1 ) 3 - ( 2 + x ) = x + 3
3 - 2 - x = x + 3
1 - x = x + 3
1 - 3 = 2 x
- 2 / 2 = x
-1 = x
2) 3 . ( 2 - x ) = 3 - 2x
6 - 3x = 3 - 2x
3 = - 2x + 3x
3 = x
3) - 2 . ( 1 + x ) = x
- 2 - 2x = x
- 2 = x + 2x
- 2 = 3x
- 2/3 = x
4) -3 . ( 3 - x) = x
-9 + 3x = x
2 x = 9
x = 9 / 2
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Verified answer
Explicación paso a paso: (izi)
1 ) 3 - ( 2 + x ) = x + 3
3 - 2 - x = x + 3
1 - x = x + 3
1 - 3 = 2 x
- 2 / 2 = x
-1 = x
2) 3 . ( 2 - x ) = 3 - 2x
6 - 3x = 3 - 2x
3 = - 2x + 3x
3 = x
3) - 2 . ( 1 + x ) = x
- 2 - 2x = x
- 2 = x + 2x
- 2 = 3x
- 2/3 = x
4) -3 . ( 3 - x) = x
-9 + 3x = x
2 x = 9
x = 9 / 2