Oblicz najprostszym sposobem: a) 105+(-7)+(-13)+20= b) -16+67+(-10)+(-7)+66= c) 2 i 2/5 +(-4,1)+7 i 3/5+(-5,9)= d) 4 i 4/7+5,4+(-1 i 4/7+(-7,4)= e)-0,75+6,3+(1,1)+(-1/4)+(-6,3)=
tysia123
A) 105+(-7)+(-13)+20= 105 - 7 -13 + 20 =125-20=105 b) -16+67+(-10)+(-7)+66=-16+67-10-7+66=133-33=100
b) -16+67+(-10)+(-7)+66=-16+67-10-7+66=133-33=100