Question

(3 1/5 + 2 1/4) x 5 - 25 5/6

Answer 1

-15,(3... в периоде)

Либо -46/3=15*1/3

Answer 2

To solve the expression, first, we need to perform the operations inside the parentheses, then multiply the result by 5, and finally subtract 25 5/6. Let's break it down step by step:

Step 1: Add the fractions inside the parentheses 3 1/5 + 2 1/4

To add these fractions, we need to find a common denominator, which is 20 in this case.

3 1/5 = (3 * 5 + 1)/5 = 16/5 2 1/4 = (2 * 4 + 1)/4 = 9/4

Now, add the fractions: 16/5 + 9/4 = (16 * 4 + 9 * 5)/(5 * 4) = (64 + 45)/20 = 109/20

Step 2: Multiply the result by 5 (109/20) * 5 = (109 * 5)/20 = 545/20

Step 3: Convert 25 5/6 to an improper fraction 25 5/6 = (25 * 6 + 5)/6 = 155/6

Step 4: Subtract 25 5/6 from the previous result 545/20 - 155/6

To subtract fractions, we need a common denominator, which is 20 * 6 = 120 in this case.

(545/20) = (545 * 6)/120 = 3270/120 (155/6) = (155 * 20)/120 = 3100/120

Now, subtract the fractions: (3270/120) - (3100/120) = (3270 - 3100)/120 = 170/120

Step 5: Simplify the result To simplify the fraction, we can divide both the numerator and denominator by their greatest common divisor (GCD). In this case, the GCD is 10.

(170/120) = (170/10) / (120/10) = 17/12

So, the final result is 17/12.