Question

1)-7/18-5/122)-2 3/10+(-3 1/8)​Прошу.

Answer 1

1)-14+15/36=-29/36
2)-3/5+(-3/8)=-3/5-3/8=-39/40

Answer 2

Sure, I can help you with the calculations. Let's take them one at a time:

1. -7/18 - 5/12

To subtract these fractions, we need to find a common denominator. The least common multiple (LCM) of 18 and 12 is 36.

Now, we convert both fractions to have a denominator of 36:

-7/18 = -14/36 -5/12 = -15/36

Now, we can subtract the fractions:

-14/36 - 15/36 = (-14 - 15) / 36 = -29/36

So, the result of the first calculation is -29/36.

2. 2 3/10 + (-3 1/8)

To add these mixed numbers, we need to first convert them to improper fractions.

2 3/10 = (2 * 10 + 3) / 10 = 23/10 -3 1/8 = (-3 * 8 + 1) / 8 = -25/8

Now, we add the improper fractions:

23/10 + (-25/8)

To add fractions, we need a common denominator. The LCM of 10 and 8 is 40.

Now, we convert both fractions to have a denominator of 40:

23/10 = (23 * 4) / (10 * 4) = 92/40 -25/8 = (-25 * 5) / (8 * 5) = -125/40

Now, we can add the fractions:

92/40 + (-125/40) = (92 - 125) / 40 = -33/40

So, the result of the second calculation is -33/40.

If you have any more math questions or need further assistance, feel free to ask!