Question

1.1.8-2.2=-0.14+0.17=-2.18-1.54=-7.8+5.6=2.-2/3 + 1/6 =7/9 - 1/6=-3/8 - 1/2=3.-(5.4)+(-2.8)+4.6-(+15.2)=

Answer 1

(1)
1.8-2.2= -0.4
-0.14+0.17= 0.03
-2.18-1.54= -3.72
-7.8+5.6= -2.2

(2)
-2/3+1/6= -4/6+1/6= -3/6= -1/2= -0.5
7/9-1/6= 14/18-3/18= 11/18
-3/8-1/2= -3/8-4/8= -7/8

(3)
-(5.4)+(-2.8)+4.6-(+15.2)= -5.4-2.8+4.6-15.2= -18.8

Answer 2

To calculate the given expression step by step:

1. 1.1 - 2.2 = -1.1 2. -0.14 + 0.17 = 0.03 3. -2.18 - 1.54 = -3.72 4. -7.8 + 5.6 = -2.2 5. 2 - 2/3 + 1/6 = 2 - (2/3) + (1/6) = 12/6 - 4/6 + 1/6 = 9/6 = 3/2 6. 7/9 - 1/6 = (7/9) - (1/6) = (14/18) - (3/18) = 11/18 7. -3/8 - 1/2 = (-3/8) - (4/8) = -7/8 8. 3 - (5.4) + (-2.8) + 4.6 - (+15.2) = 3 - 5.4 - 2.8 + 4.6 - 15.2 = -16.8

Therefore, the final result is -16.8.