Question

Срочно пж сократите дробь b) 15b-20c/10b. G)5x(y+2)/6y+12. D)a-3b/a^2-3ab

Answer 1

Ответ:

1)5(3b-4c)/10b=(3b-4c)/2b

2)5x(y+2)/6(y+2)=5x/6

3)(a-3b)/a(a-3b)=1/a

Answer 2

Решение:

b) 15b-20c/10b = 5(3b-4c)/(10b) = (3b - 4c)/(2b).

g) 5x(y+2)/(6y+12) = 5x(y+2)/(6(y+2)) = 5x/6;

d)(a-3b)/(a^2-3ab) = (a-3b)/(a(a-3b))= 1/a.

Answer 3

a) To simplify the fraction (15b - 20c) / (10b), we can factor out the greatest common factor from the numerator, which is 5b. This gives us:

(15b - 20c) / (10b) = 5b(3 - 4c) / (10b)

Next, we can cancel out the common factor of b in the numerator and denominator:

= (3 - 4c) / 2

So, the simplified form of the fraction is (3 - 4c) / 2.

b) To simplify the fraction 5x(y + 2) / (6y + 12), we can factor out the greatest common factor from the numerator, which is 5x, and the denominator, which is 6:

5x(y + 2) / (6y + 12) = 5x(y + 2) / 6(y + 2)

Next, we can cancel out the common factor of (y + 2) in the numerator and denominator:

= 5x / 6

Therefore, the simplified form of the fraction is 5x / 6.

c) To simplify the fraction (a - 3b) / (a^2 - 3ab), we can factor out the greatest common factor from the numerator, which is 1, and the denominator, which is a:

(a - 3b) / (a^2 - 3ab) = 1(a - 3b) / a(a - 3b)

Next, we can cancel out the common factor of (a - 3b) in the numerator and denominator:

= 1 / a

So, the simplified form of the fraction is 1 / a.