Respuesta:
Explicación paso a paso:
15 a + 21 a – 13 a + 8 a – 12 a + 7 a
36a -13a+8a-12a+7a=
23a+8a-12a+7a=
31a -12a+7a=
19a+7a= 26a
23m – 11m + 15m – 18 m + 30 m – 16 m
12m +15m -18m +30m -16m=
27 m -18m +30m -16m=
9m +30m -16m=
39m -16m = 23m
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Respuesta:
Explicación paso a paso:
15 a + 21 a – 13 a + 8 a – 12 a + 7 a
36a -13a+8a-12a+7a=
23a+8a-12a+7a=
31a -12a+7a=
19a+7a= 26a
23m – 11m + 15m – 18 m + 30 m – 16 m
12m +15m -18m +30m -16m=
27 m -18m +30m -16m=
9m +30m -16m=
39m -16m = 23m