Respuesta:
a = 46
Explicación paso a paso:
85 - 10 + 20 - a - 43 = 98
95 - a - 43 = 98
52 - a = 98
a = 98 - 52
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Respuesta:
a = 46
Explicación paso a paso:
85 - 10 + 20 - a - 43 = 98
95 - a - 43 = 98
52 - a = 98
a = 98 - 52
a = 46