Question

(1/2x-2 1/4)÷1,5=3,4÷1,2

Answer 1

(1/2x-2 1/4)•1,2=3,4•1,5
(1/2x-1/2)•6/5=5,1
3/5x-3/5=51/10
6x-6=51
6x=57
x=19/2
x=9,5

Answer 2

To solve the expression (1/2x - 2 1/4) ÷ 1.5, and compare it to 3.4 ÷ 1.2, let's take it step by step:

Step 1: Simplify the expression (1/2x - 2 1/4): To combine the fraction and whole number, convert 2 1/4 to an improper fraction: 2 1/4 = (2 * 4 + 1) / 4 = 9/4

Now the expression becomes: (1/2x - 9/4).

Step 2: Divide by 1.5: Divide each term in the expression (1/2x - 9/4) by 1.5: (1/2x) ÷ 1.5 - (9/4) ÷ 1.5

Step 3: Perform the division: (1/2x) ÷ 1.5 = (1/2x) * (1 / 1.5) = (1/2x) * (2/3) = 1/3x (9/4) ÷ 1.5 = (9/4) * (1 / 1.5) = (9/4) * (2/3) = 6/4 = 3/2

So, the expression simplifies to: 1/3x - 3/2

Now let's solve 3.4 ÷ 1.2:

Step 1: Perform the division: 3.4 ÷ 1.2 = 2.83333... (repeating decimals)

Now we have the following two expressions: 1/3x - 3/2 3.4 ÷ 1.2 = 2.83333...

These two expressions are not equal, so:

1/3x - 3/2 ≠ 3.4 ÷ 1.2