Question

(388-140)÷x=31 (79-x)+756=799 (158+x)-96=283

Answer 1

Ответ:

1) х=8

2) х=36

3) х=221

Пошаговое объяснение:

1. (388-140):х=31

248:х=31

248=31х

31х=248

х=248:31

х=8

2. (79-х)+756=799

79-х+756=799

-х+79+756=799

-х+835=799

-х=-36

х=36

3. (158+х)-96=283

158+х-96=283

х+158-96=283

х+62=283

х=283-62

х=221

Answer 2

To solve these equations, we'll go through each one step by step.

1. (388-140) ÷ x = 31

First, simplify the left side:

(388 - 140) ÷ x = 31 248 ÷ x = 31

Now, isolate x by multiplying both sides by x:

248 = 31x

Next, divide both sides by 31 to solve for x:

x = 248 / 31 x ≈ 8

So, the solution to the first equation is x ≈ 8.

2. (79 - x) + 756 = 799

First, simplify the left side by combining like terms:

(79 - x) + 756 = 799

79 - x + 756 = 799

Now, subtract 756 from both sides to isolate the variable x:

• x + 79 = 799 - 756
• x + 79 = 43

Next, subtract 79 from both sides:

• x = 43 - 79
• x = -36

So, the solution to the second equation is x = -36.

3. (158 + x) - 96 = 283

First, simplify the left side by combining like terms:

(158 + x) - 96 = 283

158 + x - 96 = 283

Now, add 96 to both sides to isolate the variable x:

x + 158 - 96 = 283 + 96

x + 62 = 379

Next, subtract 62 from both sides:

x = 379 - 62

x = 317

So, the solution to the third equation is x = 317.

To summarize:

1. x ≈ 8
2. x = -36
3. x = 317

These are the solutions to the given equations.