Question

I got these questions wrong, please explain how to do this

Answer 1

Answer:

See attachment

Step-by-step explanation:

Answer 2

Answer:

Also I couldn't see the numerator in question 19 but if u can just comment it I can solve that one also if it will help u

Step-by-step explanation:

18.)

$\frac{5}{2 } = \frac{7}{x + 2}$

to get a common denominator, we usually just multiply the two denominators. But what we do to the bottom we must do to the top as well.

so we can say

$\frac{5(x + 2)}{2(x + 2)} = \frac{7(2)}{2(x + 2)}$

so we multiplied the first fraction by x+2 to get the common denominator and the second fraction by 2

now that the denominators are the same we can drop them. So:

5(x+2)=7(2)

5x+10=14

5x=4

x=4/5 or 0.8

20.)

We will once again multiply the denominators to get a common denominator.

$\frac{4}{p - 5} = \frac{3}{p - 1}$

$\frac{4(p - 1)}{(p - 5)(p - 1)} = \frac{3(p - 5)}{(p - 5)(p - 1)}$

$\frac{4p - 4}{ {p}^{2} - 6p + 5} = \frac{3p - 15}{ {p}^{2} - 6p + 5}$

now we can once again drop the denominator. So:

4p-4=3p-15

4p-3p=-15+4

p=-11