Respuesta :

Answer:

-15

Step-by-step explanation:

6x-5-21x-70=0

-15x=0+5+70

-15x=75

x=75/-15

Answer:

X= -5

Step-by-step explanation:

PEMDAS

(6x-5)-7(3x+10)=0

(6x-5)-21x-70=0

-15x-75=0

add 75 to 75 on the left add 75 to 0 on the right

-15x=75

divide both sides by -15

X= -5