Question

1/2+3/4×8/15-3/10=?​

Answer 1

Ответ:

6/10 = 0,6

Пошаговое объяснение:

1/2 + 3/4 * 8/15 - 3/10 = 6/10 = 0,6

1) 3/4 * 8/15 = 2/5

2) 1/2 + 2/5 = 9/10

3) 9/10 - 3/10 = 6/10

если ты изучаешь округление, то 6/10 = 0,6 ))

Удачи!!

Answer 2

To solve this arithmetic expression, we follow the order of operations, which is often remembered as PEMDAS (Parentheses, Exponents, Multiplication and Division, Addition and Subtraction). Let's break it down step by step:

1. Multiply: 3/4 × 8/15 = 24/60 = 2/5

Now the expression becomes: 1/2 + 2/5 - 3/10

2. Find a common denominator: The denominators are 2, 5, and 10. The least common multiple (LCM) of these numbers is 10. We need to convert all fractions to have a denominator of 10.

Converting 1/2 to have a denominator of 10: 1/2 × 5/5 = 5/10

Converting 2/5 to have a denominator of 10: 2/5 × 2/2 = 4/10

Converting 3/10 to have a denominator of 10: (Already in the required form)

Now the expression becomes: 5/10 + 4/10 - 3/10

3. Add and subtract: When the fractions have the same denominator, we can add/subtract their numerators and keep the denominator unchanged.

5/10 + 4/10 - 3/10 = (5 + 4 - 3)/10 = 6/10

4. Simplify: We can simplify the fraction 6/10 by dividing the numerator and denominator by their greatest common divisor (GCD), which is 2 in this case.

6/10 ÷ 2/2 = 3/5

Therefore, 1/2 + 3/4 × 8/15 - 3/10 equals 3/5.