Question

7:8=x:96 а/0,6=2,5/3 2+x/5=4/9

Answer 1

Ответ:

1) 7:8=х:96

8х=96×7

8х=672

х=672:8

х=84

Пошаговое объяснение:

Answer 2

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

1. 7:8 = x:96

To solve for x, we can set up a proportion:

7/8 = x/96

Now, cross-multiply:

7 * 96 = 8 * x

672 = 8x

Now, divide both sides by 8 to isolate x:

x = 672 / 8 x = 84

So, x = 84.

2. а/0,6 = 2,5/3

To solve for а, you can multiply both sides of the equation by 0.6 to isolate а:

а = (2.5/3) * 0.6

Now, calculate the right side:

а = (2.5/3) * 0.6 а = 1.25 * 0.6 а = 0.75

So, а = 0.75.

3. 2 + x/5 = 4/9

To solve for x, first subtract 2 from both sides:

x/5 = 4/9 - 2

Now, find a common denominator for 4/9 and 2, which is 9:

x/5 = (4/9) - (18/9)

Now, subtract the fractions:

x/5 = (-14/9)

To isolate x, multiply both sides by 5:

x = (-14/9) * 5

x = -70/9

So, x = -70/9.