Explicación paso a paso:
7x - 3 = 9x + 5
-3 - 5 = 9x - 7x
-8 = 2x
-8/2 = x
-4 = x
*
Para estar seguros, comprobamos:
7(-4) - 3 = 9(-4) + 5
-28 - 3 = -36 + 5
-31 = -31
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Verified answer
Explicación paso a paso:
7x - 3 = 9x + 5
-3 - 5 = 9x - 7x
-8 = 2x
-8/2 = x
-4 = x
*
Para estar seguros, comprobamos:
7x - 3 = 9x + 5
7(-4) - 3 = 9(-4) + 5
-28 - 3 = -36 + 5
-31 = -31