Question

(×+18)×2=90 660÷(×+180)=3 (2571-×)÷25=4

Answer 1

Пошаговое объяснение:

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Answer 2

Let's solve each of these equations step by step:

1. (× + 18) × 2 = 90

First, divide both sides of the equation by 2 to isolate (× + 18):

(× + 18) = 90 / 2 (× + 18) = 45

Now, subtract 18 from both sides to find the value of ×:

× = 45 - 18 × = 27

So, the solution to the first equation is × = 27.

2. 660 ÷ (× + 180) = 3

First, multiply both sides of the equation by (× + 180) to isolate the divisor:

660 = 3 × (× + 180)

Now, divide both sides by 3 to solve for ×:

(× + 180) = 660 / 3 (× + 180) = 220

Subtract 180 from both sides to find the value of ×:

× = 220 - 180 × = 40

So, the solution to the second equation is × = 40.

3. (2571 - ×) ÷ 25 = 4

First, multiply both sides of the equation by 25 to isolate (2571 - ×):

25 × (2571 - ×) = 4

Now, divide both sides by 25 to find the value of (2571 - ×):

2571 - × = 4 × 25 2571 - × = 100

Subtract 100 from both sides to solve for ×:

• × = 100 - 2571
• × = -2471

Now, multiply both sides by -1 to get × by itself:

× = 2471

So, the solution to the third equation is × = 2471.