Question

(-2)·[12-8·(-3)+(-4)]-1=

Answer 1

(-2)×[12-8×(-3)+(-4)]-1=

-2× [12-8×(-7)]-1=

-2×[12-(-56]-1=

-2×[ 12+(56)-1=

-2×[68]-1=

-136-1=

=-135