Question

Решить уравнения 7 * х =140 : 2 и х*4=84+16 и 72:х=4*9 помогите пошу

Answer 1

7*x=70
x=70/7
x=10

x*4=100
x=100/4
x=25

72:x=36
72=36x
x=72/36
x=2

Answer 2

Solving the Equations

To solve the given equations, we'll start by solving the equation 7 * x = 140 and then proceed to solve x * 4 = 84 + 16 and 72 / x = 4 * 9.

1. 7 * x = 140 - To solve for x, we can divide both sides of the equation by 7. - This gives us: x = 140 / 7 - Therefore, x = 20.

2. x * 4 = 84 + 16 - We can simplify the right-hand side of the equation first. - 84 + 16 equals 100, so the equation becomes x * 4 = 100. - To solve for x, we can divide both sides of the equation by 4. - This gives us: x = 100 / 4 - Therefore, x = 25.

3. 72 / x = 4 * 9 - We can simplify the right-hand side of the equation first. - 4 * 9 equals 36, so the equation becomes 72 / x = 36. - To solve for x, we can multiply both sides of the equation by x. - This gives us: 72 = 36x - Then, we divide both sides by 36 to solve for x. - This gives us: x = 72 / 36 - Therefore, x = 2.

So, the solutions to the given equations are: - x = 20 for the equation 7 * x = 140. - x = 25 for the equation x * 4 = 84 + 16. - x = 2 for the equation 72 / x = 4 * 9.