Question

1-8/9 4-3/7 5+1/6 3/5*7/8 -7*2/3 -4/5*(-5)

Answer 1

1-8/9=9/9-8/9=1/9
4-3/7=3 7/7-3/7=3 4/7
5+1/6=5 1/6
3/5×7/8=21/40
-7×2/3=-14/3=-4 2/3
-4/5×(-5)=-4/5×(-5/1)=20/5=4

Answer 2

To solve these mathematical expressions, we will follow the order of operations, which is PEMDAS: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).

1-8/9 = -7/9

4-3/7 = 25/7

5+1/6 = 31/6

3/5*7/8 = 21/40

-7*2/3 = -14/3

-4/5*(-5) = 4

Therefore, the final answers are:

-7/9, 25/7, 31/6, 21/40, -14/3, 4.