-36+m+24; n+42-13; 5,7-7,7+a; -0,44+x-0,22; 3/8-0,375+k; m+5/9-2/3;
m=36-24 m=18
n=-42+13 n=-29
a=7.7-5.5 a=2
x=0.44+0.22 x=0.66
k=0
m=-5/9+2/3 m=-1/3