Question

 a, 35-{12-[-14+(-2)]}

b,49-(-54)-23

Answer 1

a) 35-{12-[-14-2]}=35-{12+14+2}=35-28=7

b)49+54-23=49+31=80

Answer 2

35 - {12-[(-14) + (-2)]}

= 35 - 12 + (-14) + (-2)

= 35 - (-14) + 12 - (-2)

= 35 - (-14) + 14

= 35 - 0

= 35

Answer 3

x-(-12)=(-8)+(-11)