Question

7- {-3+2+ [-5-2+(1-3-4)]+7-1}

Answer 1

Explicación paso a paso:

7-{-3+2+[-5-2+(1-2-4)]+7-1}

7-{-3+2+[-5-2+(-6)]+7-1}

7-{-3+2+[-13]+7-1}

7-{-8}

7+8 = 15