19. The sum of two numbers is 60 and their difference is 30.
(a) If smaller number is x, the other number is ________ (use sum).
(b) The difference of numbers in term of x is ________.
(c) The equation formed is ________.
(d) The solution of the equation is ________.
(e) The numbers are ________ and ________.
(a) 60 − x
(b) 60 − 2x
(c) −2x = −30
(d) 15
(e) 45 and 15
Let smaller number = x, then larger = 60 − x. Difference = 60 − 2x. Given difference = 30 ⇒ x = 15. Thus numbers are 15 and 45.