Question

1) 4.95 + (3, 275 - 4, 95) ; 2) (3 5/7 + 1 2/9) - (2 1/7 + 4/9)

Answer 1

Пошаговое объяснение:

1) 4.95 + (3, 275 - 4, 95)=4,95-1,675=3,275

2) (3 5/7 + 1 2/9) - (2 1/7 + 4/9)=4 59/63 -2 37/63=2 22/63

Answer 2

Let's solve these two mathematical expressions step by step:

1. 4.95 + (3,275 - 4.95): To simplify this expression, first, subtract 4.95 from 3,275 and then add the result to 4.95. 3,275 - 4.95 = 3,270.05 Now, add 4.95 to 3,270.05: 4.95 + 3,270.05 = 3,275.00

So, the result of the first expression is 3,275.00.

2. (3 5/7 + 1 2/9) - (2 1/7 + 4/9): To simplify this expression, we'll add and subtract the mixed numbers separately, and then subtract the fractions separately.

a) Add the mixed numbers within the parentheses: 3 5/7 + 1 2/9 = (3 + 1) + (5/7 + 2/9) = 4 + (45/63 + 14/63)

Now, add the fractions: 45/63 + 14/63 = 59/63

So, the first part becomes 4 59/63.

b) Add the second set of mixed numbers within the parentheses: 2 1/7 + 4/9 = (2 + 0) + (1/7 + 4/9) = 2 + (9/63 + 28/63)

Now, add the fractions: 9/63 + 28/63 = 37/63

So, the second part becomes 2 37/63.

c) Finally, subtract the two results: (4 59/63) - (2 37/63) = (4 - 2) + (59/63 - 37/63) = 2 + 22/63

So, the result of the second expression is 2 22/63.