Respuesta:
x = 9cm
Explicación paso a paso:
(x + 6) + (x + 5) + 31cm = 60cm
x + 6 + x + 5 + 31cm = 60cm
x + x + 6 + 5 + 31cm = 60cm
2x + 11 + 31cm = 60cm
2x + 42cm = 60cm
2x = 60cm - 42cm
2x = 18cm
x = 18cm/2
Comprobación:
(9cm + 6) + (9cm + 5) + 31cm = 60cm
15cm + 14cm + 31cm = 60cm
29cm + 31cm = 60cm
60cm = 60cm
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Respuesta:
x = 9cm
Explicación paso a paso:
(x + 6) + (x + 5) + 31cm = 60cm
x + 6 + x + 5 + 31cm = 60cm
x + x + 6 + 5 + 31cm = 60cm
2x + 11 + 31cm = 60cm
2x + 42cm = 60cm
2x = 60cm - 42cm
2x = 18cm
x = 18cm/2
x = 9cm
Comprobación:
(x + 6) + (x + 5) + 31cm = 60cm
(9cm + 6) + (9cm + 5) + 31cm = 60cm
15cm + 14cm + 31cm = 60cm
29cm + 31cm = 60cm
60cm = 60cm