8×-7+×=5×+21
9x - 7 = 5x + 21
9x - 5x = 21 + 7
4x = 28
x = 7
Respuesta:
x=7
Explicación paso a paso:
9x-7=5x+21
9x-5x=21+7
4x=28
x=28/4
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8×-7+×=5×+21
9x - 7 = 5x + 21
9x - 5x = 21 + 7
4x = 28
x = 7
Respuesta:
x=7
Explicación paso a paso:
9x-7=5x+21
9x-5x=21+7
4x=28
x=28/4
x=7