Question

При каком значении переменной x значение выражения 3x + 1,5 на 4,5 меньше, чем значение выражения 2(x + 2)?

Answer 1

Ответ:

-2

Пошаговое объяснение:

(3x+1,5)+4,5=2(x+2)

3x+1,5+4,5=2x+4

3x+6=2x+4

3x-2x=4-6

x=-2

Ответ: -2

Answer 2

Answer:

To find the value of variable x that makes the expression 3x + 1.5 equal to 4.5 less than the expression 2(x + 2), we can set up the equation and solve for x.

Let's break down the problem step by step:

1. Set up the equation: - The expression 3x + 1.5 is equal to 4.5 less than the expression 2(x + 2). - Mathematically, this can be written as: 3x + 1.5 = 2(x + 2) - 4.5.

2. Simplify the equation: - Distribute the 2 on the right side of the equation: 3x + 1.5 = 2x + 4 - 4.5. - Combine like terms: 3x + 1.5 = 2x - 0.5.

3. Solve for x: - Subtract 2x from both sides of the equation: 3x - 2x + 1.5 = 2x - 2x - 0.5. - Simplify: x + 1.5 = -0.5. - Subtract 1.5 from both sides of the equation: x + 1.5 - 1.5 = -0.5 - 1.5. - Simplify: x = -2.

Therefore, the value of variable x that makes the expression 3x + 1.5 equal to 4.5 less than the expression 2(x + 2) is x = -2.

Please let me know if you need any further assistance.