Respuesta :
Answer:
x = 43
Step-by-step explanation:
6 + 2x = y. x + y = 135. y = 135-x
6 + 2x = 135 - x
+x. +x
6 + 3x = 135
-6. -6
3x = 129
3. 3
x = 43
Answer:
x = 43
Step-by-step explanation:
6 + 2x = y. x + y = 135. y = 135-x
6 + 2x = 135 - x
+x. +x
6 + 3x = 135
-6. -6
3x = 129
3. 3
x = 43