(X-348)+159=601 468-(259-x)=382' (x-12)*8=56 9y-54=162 (y+25):8=16 38x+15=91 123-4x=749

х - 348 + 159 = 601х = 601 - 159 + 348х = 790-------------------468 - (259 + х )= 382(259 +х) = 468 - 382259 + х = 86х = 86 - 259х = - 173---------------------------8х - 96 = 568х = 56 + 928х = 152  х = 19--------------------------9у - 54 = 1629у = 162 + 549у = 216у = 24-----------------------(у + 25) = 16 * 8у + 25 = 128у = 128 - 25у = 103----------------------------38х = 91 - 1538х = 76    х = 2------------------------------4х = 123 - 7494х = - 626  х = - 156,5