Answer:
23x-8
Step-by-step explanation:
8x + 15x = 23x
4 + (-12) = -8
[tex] \boxed{23x \: – \: 8} [/tex]
(8x + 4) added to (15x – 12) =
(8x + 4) + (15x – 12) =
[Group like terms]
(8x + 15x) + (4 – 12) =
[Simplify]
23x – 8
