Question

18×(1/9)^2-19×1/9=??

Answer 1

Ответ:

-17/9

Объяснение:

18×1/81-19/9

2×1/9-19/9

2/9-19/9

решение: -17/9

Answer 2

To solve the expression, let's break it down step by step:

First, simplify the exponent: (1/9)^2 = 1/81

Now, substitute the value back into the original expression:

18 × (1/81) - 19 × (1/9)

Next, perform the multiplications:

18/81 - 19/9

To subtract fractions, we need a common denominator, which is 81 × 9 = 729. Adjust the fractions accordingly:

(18 × 9)/(81 × 9) - (19 × 81)/(9 × 81)

162/729 - 1539/729

Now that the fractions have the same denominator, we can subtract them:

(162 - 1539)/729

-1377/729

The fraction -1377/729 cannot be further simplified. However, it can be expressed as a mixed number:

-1377/729 = -1 648/729

Therefore, the result of the expression 18 × (1/9)^2 - 19 × 1/9 is -1 648/729.