206-y=139
y = 206 - 139
y = 67
(134+x)+583=426
134 + x + 583 = 426
717 + x = 426
x = 426 - 717
x = -291
8(x-14)=56
x - 14 = 56 : 8
x - 14 = 7
x = 7 + 14
x = 21
