Question

Рівняння швидко
1.х-(300-148)=358
2.453-х=200-53
3(х-20)-35=65
4.45-(15-у=40

Answer 1

Відповідь:

1Покрокове пояснення:Let's solve the equation step by step:

х - (300 - 148) = 358

First, simplify the expression inside the parentheses:

х - (300 - 148) = 358

х - (152) = 358

Next, remove the parentheses by changing the sign of the term inside:

х - 152 = 358

Now, isolate the variable х by adding 152 to both sides of the equation:

х - 152 + 152 = 358 + 152

х = 510

2Therefore, the solution to the equation is х = 510.

Let's solve the equation step by step:

453 - х = 200 - 53

First, simplify both sides of the equation:

453 - х = 147

Next, isolate the variable х by subtracting 453 from both sides of the equation:

453 - х - 453 = 147 - 453

-х = -306

3To solve for х, we need to change the sign of both sides of the equation:

-х = -306

х = 306

Therefore, the solution to the equation is х = 306.

4Let's solve the equation step by step:

3(х - 20) - 35 = 65

First, simplify the expression inside the parentheses:

3х - 60 - 35 = 65

Next, combine like terms on the left side of the equation:

3х - 95 = 65

To isolate the variable х, add 95 to both sides of the equation:

3х - 95 + 95 = 65 + 95

3х = 160

5Finally, divide both sides of the equation by 3:

(3х)/3 = 160/3

х = 160/3

Therefore, the solution to the equation is х = 160/3.

The fourth equation seems to have a typo. It is written as:

45 - (15 - у = 40)

However, there is a closing parenthesis missing after у. Assuming it should be:

45 - (15 - у) = 40

Let's solve the corrected equation step by step:

First, simplify the expression inside the parentheses:

45 - (15 - у) = 40

45 - 15 + у = 40

Next, combine like terms on the left side of the equation:

30 + у = 40

To isolate the variable у, subtract 30 from both sides of the equation:

30 + у - 30 = 40 - 30

у = 10

Therefore, the solution to the equation is у = 10.