Question

2х+(11-4х)=21 7х+13=-5х+25х+5(2-4х)=291/2х+1=-1/3(х+3/4)срочно надо дам максимум балов​

Answer 1

Ответ:

x = -5

x = 1

x = - 1

x = - 3/2

Пошаговое объяснение:

1) - 2x = 10

2) 12x = 12

3) -19x=19

4) 10x = -15

Answer 2

To solve each of the equations and get maximum points, follow these steps:

1. Solve the first equation: 2x + (11 - 4x) = 21

Step 1: Distribute the negative sign in the parentheses. 2x + 11 - 4x = 21

Step 2: Combine like terms. (2x - 4x) + 11 = 21 -2x + 11 = 21

Step 3: Move the constant term (11) to the right side by subtracting it from both sides. -2x = 21 - 11 -2x = 10

Step 4: Solve for x by dividing both sides by -2. x = 10 / -2 x = -5

2. Solve the second equation: 7x + 13 = -5x + 25x + 5(2 - 4x) = 291/2

Step 1: Simplify the right side first by distributing 5 in the parentheses. 7x + 13 = -5x + 25x + 10 - 20x = 291/2

Step 2: Combine like terms on the right side. 7x + 13 = -5x + 5 - 20x = 291/2

Step 3: Combine the constants on the right side. 7x + 13 = -25x + 5 = 291/2

Step 4: Combine the x terms by moving all x terms to the left side. 7x + 25x + 25x = 291/2 - 13 - 5

Step 5: Combine the constants on the right side. 57x = 291/2 - 18 57x = 255/2

Step 6: Solve for x by dividing both sides by 57. x = (255/2) / 57 x = 255/2 * (1/57) x = 255/114

3. Solve the third equation: (2x + 1) = (-1/3)(x + 3/4)

Step 1: Distribute the (-1/3) on the right side. 2x + 1 = (-1/3)x - (1/3)(3/4)

Step 2: Simplify the right side. 2x + 1 = (-1/3)x - 1/4

Step 3: Move all the x terms to the left side by adding (1/3)x to both sides. 2x + (1/3)x + 1 = -1/4

Step 4: Combine the x terms on the left side. (6/3)x + (1/3)x + 1 = -1/4

Step 5: Combine the x terms. (7/3)x + 1 = -1/4

Step 6: Move the constant term (1) to the right side by subtracting it from both sides. (7/3)x = -1/4 - 1

Step 7: Combine the constants on the right side. (7/3)x = -5/4

Step 8: Solve for x by dividing both sides by (7/3). x = (-5/4) / (7/3) x = (-5/4) * (3/7) x = -15/28

Make sure to double-check all the calculations for accuracy. Getting the correct answers will help you get the maximum points. Good luck!