Question

0,5(4+x)-0,4(x-3)=3,5

Answer 1

Решение:

1)0,5*4=2

2)0,5*x=0,5x

2+0,5x-0,4x+1,2=3,5

Теперь нужно перенести известные в другую сторону , а неизвестные в другую.

0,5x-0,4x=3,5-2-1,2

0,1x=0,3

x=0,3:0,1

x=3.

Я решил распределителительным законом.

Answer 2

To solve the equation 0.5(4 + x) - 0.4(x - 3) = 3.5, follow these steps:

Step 1: Distribute the numbers inside the parentheses. Step 2: Combine like terms on both sides of the equation. Step 3: Isolate the variable (x) on one side of the equation. Step 4: Solve for x.

Let's do that step by step:

Step 1: Distribute the numbers inside the parentheses. 0.5 * 4 + 0.5 * x - 0.4 * x + 0.4 * 3 = 3.5

Step 2: Combine like terms on both sides of the equation. 2 + 0.1x - 0.4x + 1.2 = 3.5

Step 3: Isolate the variable (x) on one side of the equation. To do that, move the constants to the other side of the equation by subtracting 3.2 from both sides: 0.1x - 0.4x = 3.5 - 3.2

Simplify: -0.3x = 0.3

Step 4: Solve for x. Now, isolate x by dividing both sides by -0.3: x = 0.3 / -0.3

Simplify: x = -1

So, the solution to the equation is x = -1.