Question

For which equations are in the solution for x the same number? 15 – х = -3
3

Answer 1

Explanation:

First equation:

15 - x = - 3

-x = - 3 - 15

-x = -18 (now negative signs on b.s cut eachother)

[x = 18]

Second equation :

15 - x = 3

-x = 3 - 15

- x = -12 ( now negative sign on b.s cut eachother)

[x = 12]

so x = 18 and x = 12 are not same