70:40 - 21
noooo, the operation doesn't even make sense,
similar to
23 apples - 5 oranges.
one part is a ratio, which consists of 2 or more terms, the other is just an integer.
2,779
you just multiply 70x40 then subtract 21
oh idk then sorry
To calculate the value of the expression 70:40 - 21, you need to follow the order of operations, which is commonly known as PEMDAS (Parentheses, Exponents, Multiplication and Division from left to right, and Addition and Subtraction from left to right). Since there are no parentheses or exponents involved in this expression, we can proceed with the multiplication and division first, followed by subtraction.
First, let's divide 70 by 40. This division can be represented as a fraction: 70/40. To simplify the expression, you need to find the greatest common divisor (GCD) of 70 and 40, which is 10. Divide both numbers by the GCD: 70 ÷ 10 = 7 and 40 ÷ 10 = 4. So, 70/40 simplifies to 7/4.
Now, let's subtract 21 from 7/4. To subtract fractions, their denominators must be the same. We can convert 21 to a fraction with a denominator of 4 by multiplying it by 4/4: 21 × 4/4 = 84/4.
Now that the denominators are the same, we can subtract the numerators: (7 - 84)/4. Since 7 is smaller than 84, the result will be negative. Thus, the expression simplifies to -77/4.
Therefore, the value of the expression 70:40 - 21 is -77/4.