Question

Очень надо даю 35 баллов Рівняння а) 6/15 + х = 9/15 б) у + 13/31 = 14/31 в) 7/20 - с = 1/20 г) р - 8/21 =11/21 надо до 17:00

Answer 1

а)

6/15+х=9/15

х=9/15-6/15

х=3/15

х=1/5

Ответ:1/5

б)

у+13/31=14/31

у=14/31-13/31

у=1/31

Ответ:1/31

в)

7/20-с=1/20

с=7/20-1/20

с=6/20

с=3/10

Ответ:3/10

г)

р-8/21=11/21

р=11/21+8/21

р=19/21

Ответ:19/21

Answer 2

Пошаговое объяснение:

а) х=1/5

б)у=1/31

в)с=3/10

г)р=19/21

Answer 3

Equation a) 6/15 * x = 9/15

To solve the equation, we need to isolate the variable x. We can do this by multiplying both sides of the equation by the reciprocal of 6/15, which is 15/6.

So, the equation becomes:

x = (9/15) * (15/6)

Simplifying the right side of the equation:

x = (9 * 15) / (15 * 6) x = 135 / 90 x = 3/2

Therefore, the solution to equation a) is x = 3/2.

Equation b) u + 13/31 = 14/31

To solve the equation, we need to isolate the variable u. We can do this by subtracting 13/31 from both sides of the equation.

So, the equation becomes:

u = (14/31) - (13/31)

Simplifying the right side of the equation:

u = (14 - 13) / 31 u = 1/31

Therefore, the solution to equation b) is u = 1/31.

Equation c) 7/20 - s = 1/20

To solve the equation, we need to isolate the variable s. We can do this by subtracting 7/20 from both sides of the equation.

So, the equation becomes:

-s = (1/20) - (7/20)

Simplifying the right side of the equation:

-s = (1 - 7) / 20 -s = -6/20 -s = -3/10

To solve for s, we multiply both sides of the equation by -1:

s = (3/10) * (-1) s = -3/10

Therefore, the solution to equation c) is s = -3/10.

Equation d) r - 8/21 = 11/21

To solve the equation, we need to isolate the variable r. We can do this by adding 8/21 to both sides of the equation.

So, the equation becomes:

r = (11/21) + (8/21)

Simplifying the right side of the equation:

r = (11 + 8) / 21 r = 19/21

Therefore, the solution to equation d) is r = 19/21.

Please note that the solutions provided are based on the given equations and calculations. If you have any further questions, feel free to ask!