Question

2. a)-(-54 +21)+(-19+21) - (54 +17) + 2;
b)-(-7 + 15 - 67) + (-67 - 7+15) +10
c)[-9 + 13 (-9+ 13 - 10)]-(-7 + 17);
d) (-11 + 37-42)+(-37+45 + 11)-5. ,​

Answer 1

a) -(-33)+2-71+2=34-69= -35

b) -(-59)+(-61)+10=59-51=8

c) -16+19-5=3-5= -2

Answer 2

Răspuns:

a)(54+21)+(19+21)-(54+17)+2=

= 75+40-71+2=

=115-37=

=78