Respuesta :

crowne
simplify, distribute, combine like terms etc etc

x= 134/3
(or 44.66)
andrewekop

Step-by-step explanation:

calculate those with x values

15x + 100 = 770

...then collect like terms

15x = 770-100

and divide both sides by 15

x = 670

15.

x = 44⅔