Question

(25+8)•х=396; у•(58-28)=372; 13•m+57=330,решить уравнения

Answer 1

Ответ:

Пошаговое объяснение:

х(25+8)=396

Раскрываем скобки:

25х+8х=396

33х=396

х=12

у(58-28)=372

58у-28у=372

30у=372

у=12.4

13m+57=330

13m=330-57=273

m=21

Answer 2

To solve the equations, we need to find the values of variables x, y, and m. Let's solve each equation step by step:

1. (25 + 8) • x = 396

Step 1: Simplify the left-hand side of the equation. 33 • x = 396

Step 2: Solve for x. x = 396 / 33 x = 12

So, the value of x is 12.

2. y • (58 - 28) = 372

Step 1: Simplify the expression inside the parentheses. y • 30 = 372

Step 2: Solve for y. y = 372 / 30 y = 12.4

So, the value of y is 12.4.

3. 13 • m + 57 = 330

Step 1: Move 57 to the right-hand side of the equation. 13 • m = 330 - 57 13 • m = 273

Step 2: Solve for m. m = 273 / 13 m ≈ 21

So, the approximate value of m is 21.

Summary: x = 12 y = 12.4 m ≈ 21