(23,79:7,8 -6,8:17) × 3,04 -2,04 × 0,85
23.79/7.8=3.05 6.8/17=0.4 3.05-0.4=2.65 2.65*3.04=8.056 2.04*0.85=1.734 \8.056-1.734=6.322
(3,05-0,4)*3,04-2,04*0,85=2,65*3,04-2,04*0,85=8,056-1,734=6,322