Question

0.4(х-3)+2.5-0.5(4+х)＝0

Answer 1

0,4x-1,2+2,5-2-0,5x=0

0,4x-0,5x=1,2-2,5+2

-0,1x=0,7

x= -7

Answer 2

Ответ:

-7

Пошаговое объяснение:

0.4x - 1.2 + 2.5 -2 -0.5x = 0

-0.1x = 0.7

x = -0.7 / 0.1

x = -7

Answer 3

Let's solve the equation step by step:

0.4(x - 3) + 2.5 - 0.5(4 + x) = 0

Step 1: Distribute the constants inside the parentheses: 0.4x - 1.2 + 2.5 - 0.5 * 4 - 0.5x = 0

Step 2: Combine like terms: (0.4x - 0.5x) + (2.5 - 1.2 - 2) = 0

Step 3: Simplify further: (0.4 - 0.5)x + (2.5 - 1.2 - 2) = 0

Step 4: Combine the coefficients and constants: (-0.1)x + (2.5 - 1.2 - 2) = 0

Step 5: Simplify the constants: (-0.1)x - 0.7 = 0

Step 6: Now, isolate x by moving the constant term to the other side: (-0.1)x = 0.7

Step 7: To solve for x, divide both sides by -0.1: x = 0.7 / -0.1

Step 8: Finally, calculate the value of x: x = -7

So, the solution to the equation is x = -7.