Question

A) |-23| - |-46| б) дроб 1|6 - дробь 2|9 в)- 2|3 x (- 3|16) г)5,7+(-6) д)- 1|9 - 5|6 е)-3,2 : 0,8

Answer 1

23-46= -23 так как модуль 
1/6-2/9=3/18-4/18=-1/18
-2/3x (-3/16)=1/8x
5,7+(-6)=-0,3
-1/9-5/6=-2/18-15/18=-17/18
-3,2:0,8=-4

Answer 2

Let's solve the given expressions step by step:

a) |-23| - |-46| |-23| = 23 (since the absolute value of -23 is 23) |-46| = 46 (since the absolute value of -46 is 46)

So, the expression becomes: 23 - 46 = -23

b) 1/6 - 2/9 To subtract fractions, we need to find a common denominator. The least common multiple of 6 and 9 is 18.

1/6 = (1 * 3)/(6 * 3) = 3/18 2/9 = (2 * 2)/(9 * 2) = 4/18

So, the expression becomes: 3/18 - 4/18 = (3 - 4)/18 = -1/18

c) -2/3 x (-3/16) To multiply fractions, we simply multiply the numerators and denominators.

(-2/3) x (-3/16) = (2 * 3)/(3 * 16) = 6/48 = 1/8

d) 5.7 + (-6) 5.7 + (-6) = 5.7 - 6 = -0.3

e) 1/9 - 5/6 To subtract fractions, we need to find a common denominator. The least common multiple of 9 and 6 is 18.

1/9 = (1 * 2)/(9 * 2) = 2/18 5/6 = (5 * 3)/(6 * 3) = 15/18

So, the expression becomes: 2/18 - 15/18 = (2 - 15)/18 = -13/18

f) -3.2 ÷ 0.8 To divide decimals, we can move the decimal point of the divisor (0.8) one place to the right and perform regular division.

-3.2 ÷ 0.8 = -32 ÷ 8 = -4

Therefore, the solutions are: a) -23 b) -1/18 c) 1/8 d) -0.3 e) -13/18 f) -4