Question

If a=5 and b=10 and c=15, what is (2ab-45)÷a?

Answer 1

a = 5 , b = 10 and c = 15

(2ab - 45 ) / a

( 2 * 5 * 10 - 45 ) / 5

100 - 45 / 5

55 / 5

11 is your answer.....

Answer 2

a=5  b=10  c=15-----------₁

(2ab-45)/a------------------₂

Substituting ₁ into₂

 (2*5*10-45)/5

= (100-45)/5

= 55/5

= 11