Question

упростите выражения  (Х-39) +69; (168+n)-68;   (235+m)-75  ;  (y-56)+116

Answer 1

(Х-39)+69=Х+30
(168+n)-68=n+100
(235+m)-75=m+160
(y-56)+116=y+60

Answer 2

х-39+69=х+30
168+n-68=n+100
235+m-75=m+160
у-56+116=у+60