Question

На яке число треба замінити а, щоб отримати правильну рівність? 1) а/17+12/17=1 2) 19/15-а/15=1 3) 7/19+а/19-8/19=0 Терміново,Допоможіть будь ласка!!!

Answer 1

Ответ:

Пошаговое объяснение:

1) а/17+12/17=1

а/17 = 1 - 12/17

а/17 = 5/17

а= 5

2) 19/15-а/15=1

а/15 = 19/15 - 15/15

а/15 = 4/15

а= 4

3) 7/19+а/19-8/19=0

а/19 = 1/19

а= 1

Answer 2

Solving for the Value of "a"

To solve for the value of "a" in each of the given equations, we can follow the steps below.

1) a/17 + 12/17 = 1 2) 19/15 - a/15 = 1 3) 7/19 + a/19 - 8/19 = 0

Equation 1: a/17 + 12/17 = 1

To solve for "a" in the first equation, we can follow these steps:

1. Subtract 12/17 from both sides of the equation: a/17 = 1 - 12/17 a/17 = 17/17 - 12/17 a/17 = 5/17

2. Multiply both sides by 17 to solve for "a": a = 5

So, a = 5 satisfies the first equation.

Equation 2: 19/15 - a/15 = 1

For the second equation, we can solve for "a" as follows:

1. Subtract 19/15 from both sides of the equation: -a/15 = 1 - 19/15 -a/15 = 15/15 - 19/15 -a/15 = -4/15

2. Multiply both sides by -15 to solve for "a": a = 4

Therefore, a = 4 satisfies the second equation.

Equation 3: 7/19 + a/19 - 8/19 = 0

Finally, for the third equation, we can solve for "a" as follows:

1. Add 8/19 to both sides of the equation: a/19 = 8/19 - 7/19 a/19 = 1/19

2. Multiply both sides by 19 to solve for "a": a = 1

Hence, a = 1 satisfies the third equation.

Therefore, to obtain the correct equality for each equation: 1) a = 5 2) a = 4 3) a = 1