Question

Розв'яжи рiвняння: a) 2x-13=-7; 6) -16 + x = -3; в) |x +2| = 18. ПОМОГИТЕ СРОЧНО

Answer 1

Пошаговое объяснение:

а) 2х-13=-7;

2х=-7+13;

2х=6;

х=3.

б) -16+х=-3;

х=-3+16;

х=13.

в) |х+2|=18;

1) х+2=18;

х=16.

2) х+2=-18;

х=-20.

відповідь: 16, -20.

Answer 2

Ответ:

а) - 7 .

б) - 3 .

в) 16 ; - 20 .

Пошаговое объяснение:

Answer 3

Solution to the Equations:

a) To solve the equation 2x - 13 = -7, we can follow these steps:

1. Add 13 to both sides of the equation: 2x - 13 + 13 = -7 + 13 Simplifying, we get: 2x = 6

2. Divide both sides of the equation by 2: (2x)/2 = 6/2 Simplifying, we get: x = 3

Therefore, the solution to the equation 2x - 13 = -7 is x = 3.

b) To solve the equation -16 + x = -3, we can follow these steps:

1. Add 16 to both sides of the equation: -16 + x + 16 = -3 + 16 Simplifying, we get: x = 13

Therefore, the solution to the equation -16 + x = -3 is x = 13.

c) To solve the equation |x + 2| = 18, we need to consider two cases:

Case 1: x + 2 is positive: In this case, the equation becomes x + 2 = 18. We can solve it as follows:

1. Subtract 2 from both sides of the equation: x + 2 - 2 = 18 - 2 Simplifying, we get: x = 16

Case 2: x + 2 is negative: In this case, the equation becomes -(x + 2) = 18. We can solve it as follows:

1. Remove the negative sign by multiplying both sides of the equation by -1: -1 * -(x + 2) = -1 * 18 Simplifying, we get: x + 2 = -18

2. Subtract 2 from both sides of the equation: x + 2 - 2 = -18 - 2 Simplifying, we get: x = -20

Therefore, the solutions to the equation |x + 2| = 18 are x = 16 and x = -20.

I hope this helps! Let me know if you have any further questions.