Explicación paso a paso:
1)
2x - 3 = 9
2x = 9 - 3
2x = 6
x = 6 / 2
x = 3
2)
2 (x-3) = 4
2x - 6 = 4
2x = 4 + 6
2x = 10
x = 10 / 2
x = 5
3)
2x - 3 = 3x - 8
2x - 3x = -8 + 3
- x = -5
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Explicación paso a paso:
1)
2x - 3 = 9
2x = 9 - 3
2x = 6
x = 6 / 2
x = 3
2)
2 (x-3) = 4
2x - 6 = 4
2x = 4 + 6
2x = 10
x = 10 / 2
x = 5
3)
2x - 3 = 3x - 8
2x - 3x = -8 + 3
- x = -5
x = 5