Question

procedimiento: -7+[(-3)-(-9)]+{(-4+5)-(-6+5)+10}

Answer 1

-7+[(-3)-(-9)]+{(-4+5)-(-6+5)+10}

-7+[-3+9]+{1-(-1)+10}

-7+[6]+{1+2+10}

-1+13

12

solución: 12