Respuesta :
Answer:
Step-by-step explanation:
hello :
-243=-9(10+w)
-243 = -90-9w
add 90 : -243+90 = -90+90-9w
-153 = -9w
w =153/9 = 17
Answer:
Step-by-step explanation:
hello :
-243=-9(10+w)
-243 = -90-9w
add 90 : -243+90 = -90+90-9w
-153 = -9w
w =153/9 = 17