Respuesta:
2a-8 = 10
(2a/2)-(8/2) = 10/2
a-4 = 5
a-4+4 = 5+4
a = 9
Comprobación:
2(9)-8 = 10
18-8 = 10
10 = 10
R// X vale 9
Explicación paso a paso:
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Respuesta:
2a-8 = 10
(2a/2)-(8/2) = 10/2
a-4 = 5
a-4+4 = 5+4
a = 9
Comprobación:
2(9)-8 = 10
18-8 = 10
10 = 10
R// X vale 9
Explicación paso a paso: