1) (0,6-1)*1,5=
2) (0,25-1) :(-5)-12
3) 35-(1,3-0,5)*(-3,5)=

(0.6-1)*1.5=-0.4*1.5=-0.6(0.25-1):(-5)-12=-12.15-0.75:(-5)=0.150.15-12=-12.1535-(1.3-0.5)*(-3.5)=-119.71.3-0.5=0.835-0.8=34.234.2*(-3.5)=-119.7