Question

a 6-(-8+3)+(-5+7-9)+2 b -13+(6-7-8)-(8-19+9)-4 c 2[-2-5-(3-2+5-1)]
d -(5-9)-[4-(-6-10)]-8
e -[-(-5-9+3)]-7
f -2-(9-21+12-18)-[-8-(7-9)]

Answer 1

a) 6-(-8+3)+(-5+7-9)+2= 6-(-5)+(-7)+2= 6+5-7+2= 11-5=6
b) -13+(6-7-8)-(8-19+9)-4= -13+(-9)-(-2)-4= -13-9+2= -20
c) 2[-2-5-(3-2+5-1)]= 2[-2-5-5]= 2-12= -10
d) -(5-9)-[4-(-6-10)]-8= -(-4)-[4-(-16)]-8= 4-[16]-8= 4+16-8= 12
e) -[-(-5-9+3)]-7= -[-(-11)]-7= -[11]-7= -11-7= -18
f) -2-(9-21+12-18)-[-8-(7-9)]= -2-(-18)-[-8-(-2)]= -2+18+8+2= 26