Ответ:
1) -2.6+(-0.3)+(-1.4)+(-9.7)= (-2.6-1.4)+(-0.3-9.7)= -4 - 10 = -14
2) 1.5-5.4+(-1.6)+8.5= (1.5+8.5)+(-1.6-5.4)= 10-7= 3
3) 4.37+(-3.65)+(-7.35)+6.63= (4.37+6.63)+(-3.65-7.35)= 11 - 11 = 0
4) 0.13+(-9.94)+(-2.13)+(-0.06)=0.13-2.13 +(-9.94-0.06)= -2 - 10 = -12
<span>3,7z-z=0,54
2.7z=0.54
z=0.54:2.7
z=0.2
</span>
504 меньше чем 845
<u><em>416:52*17+368=504
</em></u>1)416:52=8
2)8*17=136
3) 136+368=504
<em><u>1000-587</u></em><em><u>+16*27=845
</u></em>1)16*27=432
2) 1000-587=413
3) 432+413= 845