Question

(3х-1,4х)-0,8х-3,6=2,8 Дам 30баллов Пж срочно

Answer 1

Ответ:8

Пошаговое объяснение:

(3x-1,4x)-0,8x-3,6=2,8

0,8x-3,6=2,8

0,8x=2,8+3,6

0,8x=6,4

x=6,4:0,8

x=8

Answer 2

To solve the equation (3x - 1, 4x) - 0.8x - 3.6 = 2.8, we need to simplify the expression first and then isolate x on one side of the equation. Let's go step by step:

Step 1: Simplify the expression inside the parentheses (3x - 1, 4x): (3x - 1, 4x) means that we have two terms inside the parentheses, which we can combine: (3x - 1) + (4x)

Step 2: Combine like terms by adding the coefficients of x: 3x + 4x = 7x

Now, our equation becomes: 7x - 0.8x - 3.6 = 2.8

Step 3: Combine the x terms on the left side of the equation: 7x - 0.8x = 6.2x

Now, the equation becomes: 6.2x - 3.6 = 2.8

Step 4: Isolate x by moving the constant term (-3.6) to the right side of the equation by adding 3.6 to both sides: 6.2x = 2.8 + 3.6 6.2x = 6.4

Step 5: Finally, solve for x by dividing both sides by 6.2: x = 6.4 / 6.2 x ≈ 1.032

So, the solution to the equation is approximately x = 1.032.

I hope this helps! If you have any further questions or need clarification, feel free to ask.