Respuesta:
Explicación paso a paso:
A
4a=3b
a + b = 42
a+4a/3 = 42
7a/3=42
a=42x3/7
a=18
b=24
B
a/56 = b/7 y a – b = 7
7a=56b
b=7a/56
a-b=7
a-7a/56=7
56a-7a/56=7
49a=7x56
a=8
b=1
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Respuesta:
Explicación paso a paso:
A
4a=3b
a + b = 42
a+4a/3 = 42
7a/3=42
a=42x3/7
a=18
b=24
B
a/56 = b/7 y a – b = 7
7a=56b
b=7a/56
a-b=7
a-7a/56=7
56a-7a/56=7
49a=7x56
a=8
b=1