Question

0,9х + 3/4х - 1,15х=3

Answer 1

0,9х+0,75х-1,15х=3
1,65х-1,15х=3
0,5х=3
х=6
Если что:3/4=0,75

Answer 2

To solve the equation 0.9x + (3/4)x - 1.15x = 3, you'll need to combine like terms and then isolate x. Here are the steps:

1. Combine like terms on the left side of the equation:

   0.9x + (3/4)x - 1.15x = (0.9 + 3/4 - 1.15)x

2. Calculate the coefficients on the left side:

   (0.9 + 3/4 - 1.15) = (0.9 + 0.75 - 1.15) = 1.65 - 1.15 = 0.5x

3. Now, your equation becomes:

   0.5x = 3

4. Finally, isolate x by dividing both sides by 0.5:

   (0.5x)/0.5 = 3/0.5

   x = 6

So, the solution to the equation is x = 6.