Question

А)-3/7-4=? Б)-5 3/28+4 5/12=? Решите плиз

Answer 1

А) если ты забыл скобки, то -3/(7-4)=-3/3=-1
если не забыл, то -3/7-4=0,43-4=-3,57
Под б не понятно что написал

Answer 2

Solution:

To solve the given equations, let's calculate each expression step by step.

A) -3/7 - 4:

To subtract fractions, we need to have a common denominator. In this case, the common denominator is 7.

-3/7 can be written as -12/28 (multiplying the numerator and denominator by 4).

Now we can subtract the fractions:

-12/28 - 4 = -12/28 - 112/28 = (-12 - 112)/28 = -124/28

Simplifying the fraction, we get:

-124/28 = -31/7

Therefore, -3/7 - 4 is equal to -31/7.

B) -5 + 3/28 + 4 + 5/12:

To add fractions, we need to have a common denominator. In this case, the common denominator is 28.

-5 can be written as -140/28 (multiplying the numerator and denominator by 28).

Now we can add the fractions:

-140/28 + 3/28 + 4 + 5/12 = (-140 + 3 + 1120 + 70)/28 = 1053/28

Simplifying the fraction, we get:

1053/28 = 375 + 3/28

Therefore, -5 + 3/28 + 4 + 5/12 is equal to 375 + 3/28.

Please let me know if you need any further assistance!