Question

0.4(x-3)+2.5=0.5(4+x)

Answer 1

0,4x-1,2+2,5=2+0,5x
0,4x+1,3=2+0,5x
0,4x-0,5x=2-1,3
разделить обе части уравнения на 0,1
-0,1x=0,7
Ответ:x=-7

Answer 2

To solve the equation 0.4(x-3) + 2.5 = 0.5(4+x), we can start by simplifying both sides of the equation and then isolating the variable. Let's go through the steps:

Step 1: Distribute the multiplication on both sides: 0.4(x-3) + 2.5 = 0.5(4+x) 0.4x - 1.2 + 2.5 = 2 + 0.5x

Step 2: Combine like terms on both sides: 0.4x + 1.3 = 2 + 0.5x

Step 3: Move the variable terms to one side and the constant terms to the other side: 0.4x - 0.5x = 2 - 1.3 -0.1x = 0.7

Step 4: Solve for x by dividing both sides by -0.1: x = 0.7 / -0.1

Step 5: Calculate the result: x = -7

Therefore, the solution to the equation 0.4(x-3) + 2.5 = 0.5(4+x) is x = -7.