Question

Хелп дам 70 баллов. а) 7цілих 3/5+6цілих 5/6 =б)14 цілих 5/8+ 17 цілих 5/7=в)10 цілих 4/5- 6цілих 1/8=г)15 цілих 4/5 -10 цілих 7/10=Помогите пожалуйста ,этот знак/ значит дробь​

Answer 1

Ответ:

Пошаговое объяснение:

Answer 2

Calculating Mixed Fractions

Let's solve the given mixed fraction addition and subtraction problems step by step.

a) 7 цілих 3/5 + 6 цілих 5/6 = To add these mixed fractions, we first need to convert them into improper fractions. Then, we can add the fractions and the whole numbers separately.

Starting with the first mixed fraction: - 7 цілих 3/5 = (7 * 5) + 3 = 35/5 + 3/5 = 38/5

Now, the second mixed fraction: - 6 цілих 5/6 = (6 * 6) + 5 = 36/6 + 5/6 = 41/6

Adding the two improper fractions: - 38/5 + 41/6 = (38 * 6) + (41 * 5) / (5 * 6) = 228 + 205 / 30 = 433/30

Now, we need to convert the improper fraction back to a mixed fraction: - 433 ÷ 30 = 14 цілих 23/30

So, 7 цілих 3/5 + 6 цілих 5/6 = 14 цілих 23/30.

b) 14 цілих 5/8 + 17 цілих 5/7 = We'll follow the same process as above to add these mixed fractions.

Starting with the first mixed fraction: - 14 цілих 5/8 = (14 * 8) + 5 = 112/8 + 5/8 = 117/8

Now, the second mixed fraction: - 17 цілих 5/7 = (17 * 7) + 5 = 119/7 + 5/7 = 124/7

Adding the two improper fractions: - 117/8 + 124/7 = (117 * 7) + (124 * 8) / (8 * 7) = 819 + 992 / 56 = 1811/56

Converting the improper fraction back to a mixed fraction: - 1811 ÷ 56 = 32 цілих 19/56

So, 14 цілих 5/8 + 17 цілих 5/7 = 32 цілих 19/56.

c) 10 цілих 4/5 - 6 цілих 1/8 = To subtract these mixed fractions, we'll use a similar process.

Starting with the first mixed fraction: - 10 цілих 4/5 = (10 * 5) + 4 = 50/5 + 4/5 = 54/5

Now, the second mixed fraction: - 6 цілих 1/8 = (6 * 8) + 1 = 48/8 + 1/8 = 49/8

Subtracting the second improper fraction from the first: - 54/5 - 49/8 = (54 * 8) - (49 * 5) / (5 * 8) = 432 - 245 / 40 = 187/40

Converting the improper fraction back to a mixed fraction: - 187 ÷ 40 = 4 цілих 27/40

So, 10 цілих 4/5 - 6 цілих 1/8 = 4 цілих 27/40.

d) 15 цілих 4/5 - 10 цілих 7/10 = We'll follow the same process as above to subtract these mixed fractions.

Starting with the first mixed fraction: - 15 цілих 4/5 = (15 * 5) + 4 = 75/5 + 4/5 = 79/5

Now, the second mixed fraction: - 10 цілих 7/10 = (10 * 10) + 7 = 100/10 + 7/10 = 107/10

Subtracting the second improper fraction from the first: - 79/5 - 107/10 = (79 * 2) - (107 * 5) / (5 * 2) = 158 - 535 / 10 = -377/10

Converting the improper fraction back to a mixed fraction: - -377 ÷ 10 = -37 цілих 7/10

So, **15 цілих 4/5 - 10 цілих 7/10 = -37 ці