Explicación paso a paso:
1) 5x = 24 + x
5x - x = 24
4x = 24
x = 24/4
x = 6
2) 6x + 3 = 3x + 24
6x - 3x = 24 - 3
3x = 21
x = 21/3
x = 7
3) 9x + 3 = 2x - 11
9x - 2x = -11 - 3
7x = -14
x = -14/7
x = -2
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Verified answer
Explicación paso a paso:
1) 5x = 24 + x
5x - x = 24
4x = 24
x = 24/4
x = 6
2) 6x + 3 = 3x + 24
6x - 3x = 24 - 3
3x = 21
x = 21/3
x = 7
3) 9x + 3 = 2x - 11
9x - 2x = -11 - 3
7x = -14
x = -14/7
x = -2