Respuesta :

Answer:

21-7x

Step-by-step explanation: gather like terms

25-4=21   -9x+2x=-7x

alexisf041605

Answer:

21-7x

Step-by-step explanation:

you have to basically combine like terms. so you would then have 25-4 and then -9x=2x, which is how i got 21-7x

Otras preguntas