Question

(2х+4):4,5=1 7/9:0,01

Answer 1

Ответ:

x=398

Пошаговое объяснение:

(2x+4):4,5=1 7/9:0,01

2x+4=450*1 7/9

2x+4=450*16/9

2x+4=50*16

2x+4=800

2x=800-4

2x=796

2x=398

Answer 2

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

1. (2x + 4) / 4.5 = 1 To solve for x, we'll first isolate x by multiplying both sides of the equation by 4.5:

(2x + 4) = 1 * 4.5

Now, simplify the right side:

2x + 4 = 4.5

Next, subtract 4 from both sides to isolate 2x:

2x = 4.5 - 4

2x = 0.5

Now, divide both sides by 2 to solve for x:

x = 0.5 / 2

x = 0.25

So, the solution for this equation is x = 0.25.

2. 7/9 : 0.01 To divide fractions, we'll convert the division to multiplication by taking the reciprocal of the second fraction:

7/9 ÷ 0.01 = 7/9 * (1/0.01)

Now, simplify the right side:

7/9 * (1/0.01) = 7/9 * 100

To multiply fractions, multiply the numerators together and the denominators together:

(7 * 100) / (9 * 1) = 700 / 9

Now, simplify the fraction:

700 ÷ 9 ≈ 77.78 (rounded to two decimal places)

So, 7/9 divided by 0.01 is approximately 77.78.