First, we simplify the first expression:
(2 2/5:1,2)×7/8 + 1 1/8:Convert 2 2/5 to an improper fraction: 12/Convert 1 1/8 to an improper fraction: 9/8
(12/5:1,2)×7/8 + 9/8:(12/5 (1+2))/8 + 9/(8 2(12/5 3)/8 + 9/136/40 + 9/1(364)/(40*4) + 9/1144/160 + 9/1(144+90)/16234/160 = 1 74/160 = 1 37/80
Now, simplify the second expression:
(4,5-1/3):2/9-(3,5+1/3)-4 1/4.5 - 1/3:2/9 - 3.5 - 1/3 - 4.4.5 - 1/3:2/9 - 3.5 - 1/3 - 4.4.5 - (1/3 (2+9)) - 3.5 -1/3 - 4.4.5 - (1/3 11) - 3.5 - 1/3 - 4.4.5 - 11/3 - 3.5 - 1/3 - 4.4.5 - 33/9 - 3.5 - 1/3 - 4.4.5 - 3.666 - 3.5 - 0.333 - 4.0.834 - 3.5 - 0.333 - 4.0.834 - 3.5 = -2.666
Therefore, the simplified expression is:
1 37/80 - 2 2/3 = -0.8475
First, we simplify the first expression:
(2 2/5:1,2)×7/8 + 1 1/8:
Convert 2 2/5 to an improper fraction: 12/
Convert 1 1/8 to an improper fraction: 9/8
(12/5:1,2)×7/8 + 9/8:
(12/5 (1+2))/8 + 9/(8 2
(12/5 3)/8 + 9/1
36/40 + 9/1
(364)/(40*4) + 9/1
144/160 + 9/1
(144+90)/16
234/160 = 1 74/160 = 1 37/80
Now, simplify the second expression:
(4,5-1/3):2/9-(3,5+1/3)-4 1/
4.5 - 1/3:2/9 - 3.5 - 1/3 - 4.
4.5 - 1/3:2/9 - 3.5 - 1/3 - 4.
4.5 - (1/3 (2+9)) - 3.5 -1/3 - 4.
4.5 - (1/3 11) - 3.5 - 1/3 - 4.
4.5 - 11/3 - 3.5 - 1/3 - 4.
4.5 - 33/9 - 3.5 - 1/3 - 4.
4.5 - 3.666 - 3.5 - 0.333 - 4.
0.834 - 3.5 - 0.333 - 4.
0.834 - 3.5 = -2.666
Therefore, the simplified expression is:
1 37/80 - 2 2/3 = -0.8475