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Lidia = m
Resolvemos :
m + 24 + m = 86
m + m + 24 = 86
2m + 24 = 86
2m = 86 - 24
2m = 62
m = 62/2
m = 31
m + 24 = 31 + 24 = 55
Solución :
Ana tiene = $55
Lidia tiene = $31