Question

7x - 9,4 =3x +7 _____________________________________

Answer 1

7x - 9,4 =3x +7
4x=16,4
x=4,1

Answer 2

7x-9.4=3x+7
7x-3x=7+9.4
4x=16.4
x=16.4/4
x=4.1

Answer 3

To solve the equation, we need to isolate the variable x on one side of the equation. Let's simplify and solve for x step by step:

7x - 9,4 = 3x + 7

Step 1: Combine like terms on both sides of the equation.

To do this, let's first get rid of the decimal by treating it as a regular decimal point:

7x - 9.4 = 3x + 7

Step 2: Move all terms containing x to one side of the equation and constants to the other side. To do this, we'll subtract 3x from both sides and add 9.4 to both sides:

7x - 3x - 9.4 = 3x - 3x + 7 + 9.4

This simplifies to:

4x - 9.4 = 7 + 9.4

Step 3: Combine the constants on the right side:

4x - 9.4 = 16.4

Step 4: Now, isolate x on one side by adding 9.4 to both sides:

4x - 9.4 + 9.4 = 16.4 + 9.4

This simplifies to:

4x = 25.8

Step 5: Finally, solve for x by dividing both sides by 4:

4x/4 = 25.8/4

x = 6.45

So, the solution to the equation is:

x = 6.45