Answer:
[tex]15x - 20 = 10x + 5x -10 -10[/tex]
Step-by-step explanation:
Given
[tex]15x - 20[/tex]
Required
Write an equivalent expression (with 4 terms)
15x can be expressed as 10x + 5x
-20 can be expressed as -10 - 10
Bring these together, we have:
[tex]15x - 20 = 10x + 5x -10 -10[/tex]
Hence:
10x + 5x -10 -10 is an equivalent of 15x - 20
Note that there are as many other equivalent expressions as possible