Explicación paso a paso:
7.
[24(16) + 16(12)]/40
[384 + 192]/40
576/40
14,4
8.
[40(4) + 15(8)]/66
[160 + 120]/66
280/66
4,24
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Explicación paso a paso:
7.
[24(16) + 16(12)]/40
[384 + 192]/40
576/40
14,4
8.
[40(4) + 15(8)]/66
[160 + 120]/66
280/66
4,24