Question

Преобразуйте в тождественно равные выражения 1) 6х × (-10у)2) -3,4а ×(80б) 3) 7 1/12с × 1 5/7д 4) 2,7мн × (2 1/9т) 5) -1,1 (50а - с) 6) (23,5х - 1/6у) × (-6)помогите пожалуйста... ​

Answer 1

Ответ:

Пошаговое объяснение:

1) 6х × (-10у)=-60ху

2) -3,4а ×(80б)=-272аб

3) 7 1/12с × 1 5/7д=85/12с*12/7д=85/7сд=

12 1/7 сд

4) 2,7мн × (2 1/9т)=27/10мн*19/9т=5,7мнт

5) -1,1 (50а - с)=-55а+1,1с

6) (23,5х - 1/6у) × (-6)=-141х+у

Answer 2

Simplifying Expressions

To simplify the given expressions, let's go through each one step by step:

1) 6х × (-10у)

To simplify this expression, we can multiply the coefficients and add the exponents of the variables. In this case, we have:

6 × (-10) = -60

So the simplified expression is -60xy.

2) -3.4а × (80б)

Similarly, we can multiply the coefficients and combine the variables:

-3.4 × 80 = -272

So the simplified expression is -272ab.

3) 7 + 1/12с × 1 + 5/7д

To simplify this expression, we need to perform the multiplication first and then add the results. Let's break it down:

1/12 × 1 = 1/12

5/7 × д = 5д/7

Now we can add the results:

7 + 1/12с + 5д/7

Since the variables are different, we cannot combine them further. So the simplified expression is 7 + 1/12с + 5д/7.

4) 2.7мн × (2 + 1/9т)

Again, let's perform the multiplication first:

2.7 × 2 = 5.4

2.7 × 1/9т = 0.3т/9 = 0.1т/3

Now we can add the results:

5.4мн + 0.1т/3мн

Since the variables are different, we cannot combine them further. So the simplified expression is 5.4мн + 0.1т/3мн.

5) -1.1(50а - с) + 6(23.5х - 1/6у) × (-6)

Let's simplify this expression step by step:

-1.1(50а - с) = -55а + 1.1с

6(23.5х - 1/6у) = 141х - 1/6у

Now we can multiply the result by -6:

-6(141х - 1/6у) = -846х + 1/6у

Finally, we can add the two results:

-55а + 1.1с - 846х + 1/6у

Since the variables are different, we cannot combine them further. So the simplified expression is -55а + 1.1с - 846х + 1/6у.

I hope this helps! Let me know if you have any further questions.