Question

7/40 + 11/70 + 13/30 = ??( / - дробь)​

Answer 1

7/10+11/70+13/30=1 67/210

Answer 2

To add these fractions, you need to find a common denominator and then add the numerators. The common denominator for 40, 70, and 30 is 420 (the smallest number divisible by all three denominators). Then, you can perform the addition:

7/40 + 11/70 + 13/30

Step 1: Find the common denominator (denoted as D): D = 40 * 70 * 30 = 42,000

Step 2: Convert each fraction to have the common denominator: (7/40) * (1050/1050) = 7350/42000 (11/70) * (600/600) = 6600/42000 (13/30) * (1400/1400) = 18200/42000

Step 3: Add the fractions together: 7350/42000 + 6600/42000 + 18200/42000 = (7350 + 6600 + 18200)/42000 = 32150/42000

Step 4: Simplify the fraction (if needed): To simplify the fraction, find the greatest common divisor (GCD) of the numerator and denominator and divide both by it: GCD(32150, 42000) = 50 32150/50 ÷ 42000/50 = 643/840

So, the result is 643/840.