Respuesta :
Substitute y in the equation (x-y=30).
x-15=30
+15 +15
x=45
Solution:
x=45
y=15
Input your new values.
45-15=30
30=30 ✔
x-15=30
+15 +15
x=45
Solution:
x=45
y=15
Input your new values.
45-15=30
30=30 ✔