Question

Seven times a number decrease by 18 equals 25.
Find the number.

Answer 1

Answer:

Let the number be ‘p’

Thus the equation becomes;

7p - 18 = p

7p = p + 18 ( transpose 18 to rhs and change the sign )

7p - p = 18 ( transpose p to lhs and change the sign )

6p = 18 ( simplify )

p = 18 ÷ 6 ( transpose 6 to rhs and change the sign )

p = 3 ( simplify )

Hope this helps..