(26) Si a/b=4/7; a+b=143; calcula "a".
A) 32. B) 36. C) 40. D) 48
E)52
A) 32. B) 36. C) 40. D) 48
E)52
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Respuesta:
Explicación paso a paso:
A=4
B=7
4x+7=143
4x=143-7
4x=136
x=136/4
x=34