Question

(Х+400):4=5:3 !!!!!!!!!!!!!!!!!!!!!!

Answer 1

(х + 400) : 4 = 5 : 3 - это пропорция

(х + 400) · 3 = 4 · 5 - свойство пропорции

(х + 400) · 3 = 20

х + 400 = 20 : 3

х + 400 = 6 целых 2/3

х = 6 целых 2/3 - 400

х = -(399 3/3 - 6 2/3)

х = -393 целых 1/3

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2 способ.

(х + 400) : 4 = 5 : 3

х + 400 = 5/3 · 4

х + 400 = 20/3

х = 6 целых 2/3 - 400

х = -393 целых 1/3

Answer 2

Ответ:

x=-393 целая 1/3

Пошаговое объяснение:

$\frac{x + 400}{4} = \frac{5}{3}$

3(x+400)=5×4

3x+1200=20

3x=20-1200

3x=-1180

$x = - 393 \frac{1}{3}$

Answer 3

To solve the equation $(x+400)/4=5/3$, we can follow these steps:

Step 1: Multiply both sides of the equation by 4 to eliminate the denominator on the left-hand side: $4*(x+400)/4 = 4 * 5/3$ $x + 400 = 20/3$

Step 2: Now, subtract 400 from both sides to isolate the variable 'x': $x + 400 - 400 = 20/3 - 400$ $x = 20/3 - 1200/3$ $x = (20 - 1200)/3$ $x = -1180/3$ $x = -1180/3$

So the solution for the equation is $x = -1180/3$ or approximately $x = -393.33$.