Question

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Answer 1

Explicación paso a paso:

$- 8 + 9 - 6 + 5 - 1 = - 1 \\ \\ - 10 + 4 - 3 + 5 - 7 = - 13 \\ \\ 4( - 1 + 3 - 5 + 6) = - 12 \\ \\ 9 - 8 + 5 - 2 - 1 \div - 2 + 6 - 3 + 5 = 3 \div 4 = 1.2 \\ \\ 5( - 1 + 6(3) - 7( - 4) = 5(11) = 55$