Question

0'4(x-9)=0,3(2+x)+0,7

Answer 1

0,4 ( х - 9 ) = 0,3 ( 2 + х ) + 0,7
0,4х - 3,6 = 0,6 + 0,3х + 0,7
0,4х - 0,3х = 0,7 + 0,6 + 3,6
0,1х = 4,9
х = 4,9 ÷ 0,1
х = 49.
Ответ : х = 49.
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Удачи)))))

Answer 2

To solve the equation, first, we need to simplify and then isolate the variable x. Let's go step by step:

1. Distribute the values on the left and right sides of the equation: 0.4(x - 9) = 0.3(2 + x) + 0.7

   Simplify the right-hand side: 0.4x - 3.6 = 0.3(2) + 0.3x + 0.7

   0.4x - 3.6 = 0.6 + 0.3x + 0.7

2. Combine like terms: 0.4x - 3.6 = 0.3x + 1.3

3. Now, we want to isolate the variable x on one side of the equation. Let's move all the terms containing x to the left side by subtracting 0.3x from both sides: 0.4x - 0.3x - 3.6 = 0.3x - 0.3x + 1.3

   0.1x - 3.6 = 1.3

4. Next, let's move the constant term (-3.6) to the right side of the equation by adding 3.6 to both sides: 0.1x - 3.6 + 3.6 = 1.3 + 3.6

   0.1x = 4.9

5. Finally, solve for x by dividing both sides by 0.1: x = 4.9 / 0.1

   x = 49

So, the solution to the equation is x = 49.