Question

If a+a+a=30,a+b+b=20,b+c+c=9,find c-b×a

Answer 1

Answer:

-48

Step-by-step explanation:

a+a+a=30

3a = 30

a = 10

a+b+b=20

10+2b = 20

b=5

b+c+c=9

5+2c=9

c = 2

c-bxa = 2-5x10=2-50=-48