Question

15а+2y, при а=1/30, y=1/18​

Answer 1

Объяснение:

Подставим числа а=1/30, y=1/18 в формулу 15а+2y и решим:

$\frac{15}{30} + \frac{2}{18} = \frac{1}{2} + \frac{1}{9} = \frac{9}{18} + \frac{2}{18} = \frac{11}{18}$

Answer 2

To evaluate the expression 15а + 2y when a = 1/30 and y = 1/18, we can substitute the given values into the expression.

Let's substitute a = 1/30 and y = 1/18 into the expression 15а + 2y:

15(1/30) + 2(1/18)

To simplify this expression, we can first find the common denominator, which is 90:

(15/1)(1/30) + (2/1)(1/18)

Next, we can simplify the fractions:

15/30 + 2/18

Now, we can convert both fractions to have a common denominator of 90:

(15/30)(3/3) + (2/18)(5/5)

This gives us:

45/90 + 10/90

Adding the two fractions together, we get:

(45 + 10)/90

Simplifying the numerator, we have:

55/90

This fraction can be further simplified by dividing both the numerator and denominator by their greatest common divisor, which is 5:

(55/5)/(90/5) = 11/18

Therefore, when a = 1/30 and y = 1/18, the expression 15а + 2y evaluates to 11/18.