Question

-11+7-2{-4+1[-2(-3+4)-2+4(4+7)-8]-4}​

Answer 1

-11+7-2{-4+1[-2(-3+4)-2+4(4+7)-8]-4}

=−4−2(−4+1(−2(−3+4)−2+4(4+7)−8)−4)

=−4−2(−4+1((−2)(1)−2+4(4+7)−8)−4)

=−4−2(−4+1(−2−2+4(4+7)−8)−4)

=−4−2(−4+1(−4+4(4+7)−8)−4)

=−4−2(−4+1(−4+(4)(11)−8)−4)

=−4−2(−4+1(−4+44−8)−4)

=−4−2(−4+1(40−8)−4)

=−4−2(−4+(1)(32)−4)

=−4−2(−4+32−4)

=−4−2(28−4)

=−4−(2)(24)

=−4−48

=−52