492
1) 3,5-(-11,5-2,2)=3,5-(-13,7)=17,2
2) 3,5-(-3,5-2,25)=3,5-(-5,75)=9,25
3) 3,5-(-2,8-3,19)=3,5-(-5,99)=9,49
4) 3,5-(-0,45-4,5)=3,5-(-4,95)=8,45
493
1) 5,6-(7,6+4,8)=5,6-12,4=-6,8
2) 52,3-(-18,9-24,5)=52,3-(-43,4)=95,7
3) -5/6-(-7/9+5/8)=-5/6-(-56/72+45/72)=-5/6+11/72=-60/72+11/72=-49/72
4) -7 3/16-(2 1/8+7 7/12)=-115/16-(17/8+91/12)=-115/16-(51/24+182/24)=
=-115/16-233/24=-345/48-466/48=-811/48=-16 43/48
495
1)
х+24=-126
х=-126-24
х=-150
-150+24=-126
-126=-126
3)
х+327=-820
х=-820-327
х=-1147
-1147+327=-820
-820=-820