Question

(x-5)×9=162; 3×(x+2)+2x=31

Answer 1

(x-5)×9=162
9х-45=162
9х=207
х=23

3×(x+2)+2x=31
3х+6+2х=31
5х=31-6
5х=25
х=5

Удачи)
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Answer 2

(x-5)×9=162 2) хз
9x-45=162
9x=162+45
9x=207
x=23

Answer 3

To solve the equations, let's go through them one by one.

Equation 1: (x - 5) × 9 = 162

Let's simplify this equation step by step:

Step 1: Distribute the 9 on the left side of the equation: 9x - 45 = 162

Step 2: Move the constant term (-45) to the right side by adding 45 to both sides: 9x = 162 + 45 9x = 207

Step 3: Divide both sides by 9 to solve for x: x = 207 / 9 x ≈ 23

So the solution to Equation 1 is x ≈ 23.

Equation 2: 3 × (x + 2) + 2x = 31

Let's simplify this equation step by step:

Step 1: Distribute the 3 on the left side of the equation: 3x + 6 + 2x = 31

Step 2: Combine like terms on the left side: 5x + 6 = 31

Step 3: Move the constant term (6) to the right side by subtracting 6 from both sides: 5x = 31 - 6 5x = 25

Step 4: Divide both sides by 5 to solve for x: x = 25 / 5 x = 5

So the solution to Equation 2 is x = 5.

Therefore, the solutions to the given system of equations are x ≈ 23 and x = 5.