Question

If the point (a, a -2) lies on the graph of the equation 3x + 5 y= 30, find the value of a​

Answer 1

Answer:

putting the value on the given equation (x,y) (a,a-2)

3 a+5 (a-2) =30

3a + 5a -10 = 30

8a - 10 = 30

8a = 40

a = 40/8

a = 5