Question

1) 5х=10 х= 2) 10х=90 х= 3) 2х=-12 х= 4) -3х=15 х= 5) -12у=-36 х= 6) 3х=1 х= 7) 7у=-4 х= 8) 1 2 у=4 х= 9) 5-у=4, х= 10)2х+3=13 х= 11)2у=7у х= 12) х+4=3х х=

Answer 1

Ответ:1)2

2)9

3)-6

4)-5

5)-2

6)1/3

7)-4/7

8)1/3

9)1

10)5

11) 0

12)2

Объяснение:

Answer 2

Ответ:

1)2 2)9 3)-6 4)-5 5)3 6)1/3 7)-4/7 8)1/3 9)-1 10)5 11)0 12)2

Объяснение:

Answer 3

1) 5x = 10 + x To solve this equation, we need to isolate the variable x on one side of the equation. We can do this by subtracting x from both sides of the equation: 5x - x = 10 4x = 10 Now, we divide both sides of the equation by 4 to solve for x: x = 10/4 x = 2.5

2) 10x = 90 + x To solve this equation, we need to isolate the variable x on one side of the equation. We can do this by subtracting x from both sides of the equation: 10x - x = 90 9x = 90 Now, we divide both sides of the equation by 9 to solve for x: x = 90/9 x = 10

3) 2x = -12 + x To solve this equation, we need to isolate the variable x on one side of the equation. We can do this by subtracting x from both sides of the equation: 2x - x = -12 x = -12

4) -3x = 15 + x To solve this equation, we need to isolate the variable x on one side of the equation. We can do this by adding 3x to both sides of the equation: -3x + 3x = 15 0 = 15 Since 0 is not equal to 15, there is no solution to this equation.

5) -12y = -36 + x To solve this equation, we need to isolate the variable x on one side of the equation. We can do this by adding 36 to both sides of the equation: -12y + 36 = x

6) 3x = 1 + x To solve this equation, we need to isolate the variable x on one side of the equation. We can do this by subtracting x from both sides of the equation: 3x - x = 1 2x = 1 Now, we divide both sides of the equation by 2 to solve for x: x = 1/2 x = 0.5

7) 7y = -4 + x To solve this equation, we need to isolate the variable x on one side of the equation. We can do this by adding 4 to both sides of the equation: 7y + 4 = x

8) 1 + 2y = 4 + x To solve this equation, we need to isolate the variable x on one side of the equation. We can do this by subtracting 1 and 2y from both sides of the equation: 1 + 2y - 1 - 2y = 4 - 1 0 = 3 Since 0 is not equal to 3, there is no solution to this equation.

9) 5 - y = 4, x To solve this equation, we need to isolate the variable x on one side of the equation. We can do this by subtracting 5 from both sides of the equation: 5 - 5 - y = 4 - 5 -y = -1 Now, we multiply both sides of the equation by -1 to solve for y: y = 1

10) 2x + 3 = 13 + x To solve this equation, we need to isolate the variable x on one side of the equation. We can do this by subtracting x and 3 from both sides of the equation: 2x - x + 3 - 3 = 13 - 3 x = 10

11) 2y = 7y + x To solve this equation, we need to isolate the variable x on one side of the equation. We can do this by subtracting 7y from both sides of the equation: 2y - 7y = x -5y = x

12) x + 4 = 3x + x To solve this equation, we need to isolate the variable x on one side of the equation. We can do this by subtracting x from both sides of the equation: x - x + 4 = 3x - x 4 = 2x Now, we divide both sides of the equation by 2 to solve for x: 2 = x