1) (x-34) + 15=61 2)(k-36)- 43=72 3)(37+d)-58=49 4)957-(t+336) =428 5)325-(a-617)=219 6)468-(259-c)=382

(х-34)+15=61
(х-34)=61-15
(х-34)=46
х=46+34
х=80

1) (х-34)+15=61, х-34=46, х=80
2) (k-36)-43=73, k-36=30, k=66
3) (37+d)-58=49, 37+d=107, d=70
4) 957-(t+336)=428, t+336=529, t =193
5)325-(a-617)=219, a-617=106, a=723
6) 468-(259-c)=382, 259-c=86, c= 173