Question

please solve 17 and 18 questions... ​

Answer 1

Answer:

solve 17 question with elimination method

Step-by-step explanation:

related example

Answer 2

Answer:

15 and 25

Step-by-step explanation:

tow numbers in the ratio of5:3

so we can put it as 5x and 3x

according to the question

when the both numbers added with 10 they become the ratio of 5:7

it can be 5x and 7x

the equation is

7x+5x =10+3x+10+5x

12x=20+8x

12x-8x=20

4x=20

x=20/4

x=5

3x=5×3=15

5x=5×5=25