Respuesta:
b=30
Explicación paso a paso:
a=48-b
a=3([tex]\frac{b}{5}[/tex])=3b/5
48-b=3b/5
240-5b=3b
240=8b
30=b
a/3 = b/5
a . 5 = b. 3
5a = 3b
a = 3b/5
a + b = 48
3b/5 + b = 48
3b + 5b = 48
8b = 240
b = 240/8
b = 30
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Respuesta:
b=30
Explicación paso a paso:
a=48-b
a=3([tex]\frac{b}{5}[/tex])=3b/5
48-b=3b/5
240-5b=3b
240=8b
30=b
a/3 = b/5
Multiplicamos en cruz:
a . 5 = b. 3
5a = 3b
a = 3b/5
Remplazamos:
a + b = 48
3b/5 + b = 48
3b + 5b = 48
8b = 240
b = 240/8
b = 30