Question

Решите примеры (0,9-1/3+0,75-1/15):(0,5-1/6):5/12= ____________________________________________ (5/7-0,4+11/14):(2/3+0,8-7/15):2 1/5= Если что полоса под примерами это деление кто не знает)) Помогите плиииз пол дня решаю ни чего не сходится(

Answer 1

Все решение обведено ручкой

Answer 2

Calculation 1: (0.9 - 1/3 + 0.75 - 1/15) : (0.5 - 1/6) : (5/12)

To solve this expression, we need to follow the order of operations (PEMDAS/BODMAS), which stands for Parentheses/Brackets, Exponents/Orders, Multiplication/Division, and Addition/Subtraction.

Let's break down the expression step by step:

Step 1: Simplify the numerator - (0.9 - 1/3 + 0.75 - 1/15) = 0.9 - 1/3 + 0.75 - 1/15

Step 2: Simplify the denominator - (0.5 - 1/6) = 0.5 - 1/6

Step 3: Simplify the division - (0.9 - 1/3 + 0.75 - 1/15) : (0.5 - 1/6) = (0.9 - 1/3 + 0.75 - 1/15) / (0.5 - 1/6)

Step 4: Simplify the division further - (0.9 - 1/3 + 0.75 - 1/15) / (0.5 - 1/6) = (0.9 - 1/3 + 0.75 - 1/15) * (6/0.5)

Step 5: Simplify the numerator - (0.9 - 1/3 + 0.75 - 1/15) * (6/0.5) = (2.7 - 1/3 + 0.75 - 1/15) * (6/0.5)

Step 6: Simplify the numerator further - (2.7 - 1/3 + 0.75 - 1/15) * (6/0.5) = (2.7 - 0.3333333333333333 + 0.75 - 0.06666666666666667) * (6/0.5)

Step 7: Simplify the numerator and denominator - (2.7 - 0.3333333333333333 + 0.75 - 0.06666666666666667) * (6/0.5) = (3.05) * (12)

Step 8: Calculate the final result - (3.05) * (12) = 36.6

Therefore, the result of the first expression is 36.6.

Calculation 2: (5/7 - 0.4 + 11/14) : (2/3 + 0.8 - 7/15) : 2 + 1/5

Let's break down this expression step by step:

Step 1: Simplify the numerator - (5/7 - 0.4 + 11/14) = 5/7 - 0.4 + 11/14

Step 2: Simplify the denominator - (2/3 + 0.8 - 7/15) = 2/3 + 0.8 - 7/15

Step 3: Simplify the division - (5/7 - 0.4 + 11/14) : (2/3 + 0.8 - 7/15) = (5/7 - 0.4 + 11/14) / (2/3 + 0.8 - 7/15)

Step 4: Simplify the division further - (5/7 - 0.4 + 11/14) / (2/3 + 0.8 - 7/15) = (5/7 - 0.4 + 11/14) * (15/2 + 3/5)

Step 5: Simplify the numerator - (5/7 - 0.4 + 11/14) * (15/2 + 3/5) = (5/7 - 0.4 + 11/14) * (15/2 + 3/5)

Step 6: Simplify the numerator further - (5/7 - 0.4 + 11/14) * (15/2 + 3/5) = (5/7 - 0.4 + 11/14) * (7.5 + 0.6)

Step 7: Simplify the numerator and denominator - (5/7 - 0.4 + 11/14) * (7.5 + 0.6) = (0.7142857142857143 - 0.4 + 0.7857142857142857) * (8.1)

Step 8: Calculate the final result - (0.7142857142857143 - 0.4 + 0.7857142857142857) * (8.1) = 1.1 * 8.1

Therefore, the result of the second expression is 8.91.

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