Question

ПОМОГИТЕ, СРОЧНО!!! Раскройте скобки и вычислите!!

Answer 1

8,3+4,5-6,3=12,8-6,3=6,5
4,1-5,6+6,9= -1,5+6,9=5,4
0,2+4,8-6 1/8=5-49/8=-9/8=-1 1/8
3 1/9-3 1/2-2 1/9=-7/18-19/9=-2 1/9

8,4-х+3,6=18
-х=18-3,6-8,4
-х=6
х=-6 

Answer 2

1)8.3 + (4.5 - 6.3) = 8.3 + 4.5 - 6.3 = 6.5
2)4.1 - (5.6 - 6.9) = 4.1 - 5.6 + 6.9 = 11 - 5.6 = 5.4
3)0.2 + (4.8 + 6 + 1/8) = 0.2 + 4.8 + 6 + 1/8= 11 + 1/8
4)3 + 1/9 - (3 + 1/2 + 2 + 1/9) = 3 + 1/9 - 3 - 1/2 - 2 - 1/9 = -2.5