Question

Срочно решите 3 уравнения полностью!!!! 1) 45:15=y:352)24:0,8=x:6,53) 3 1/8*x=1 1/4 : 4/5​

Answer 1

Пошаговое объяснение:

1)y=45÷12×35

y=131,25

2)x:6,5=30

x=6,5×30=195

3)x=25/16÷25/8=1/2

Уравнения этого типа решаются легче и быстрее пропорцией , например:

1)y=45÷15×35=105

Answer 2

Пошаговое объяснение:

ответ на фото............

45÷15=у÷35

3,75=у÷35

у=35×3,75

у=131,25

Answer 3

1. 45:15 = y:35

To solve this equation, we can use the property of ratios that states: "The ratios of two equal ratios are equal."

First, simplify both sides of the equation:

45/15 = y/35

Now, cross-multiply:

45 * 35 = 15 * y

1575 = 15y

Divide both sides by 15:

y = 1575/15

y = 105

Therefore, the solution to the equation is y = 105.

2. 24:0.8 = x:6.5

Again, simplify both sides of the equation:

24/0.8 = x/6.5

Now, cross-multiply:

24 * 6.5 = 0.8 * x

156 = 0.8x

Divide both sides by 0.8:

x = 156/0.8

x = 195

Hence, the solution to the equation is x = 195.

3. (3 1/8) * x = (1 1/4) : (4/5)

First, convert the mixed numbers to improper fractions:

3 1/8 = (8 * 3 + 1) / 8 = 25/8

1 1/4 = (4 * 1 + 1) / 4 = 5/4

Now, substitute the values into the equation:

(25/8) * x = (5/4) : (4/5)

To divide by a fraction, we multiply by its reciprocal:

(25/8) * x = (5/4) * (5/4)

Simplify both sides:

25x/8 = 25/16

Multiply both sides by 8:

25x = 25/16 * 8

25x = 25/2

Divide both sides by 25:

x = (25/2) / 25

x = 1/2

Therefore, the solution to the equation is x = 1/2.