cheonsa
cheonsa
27-02-2017
Mathematics
contestada
Solve using elimination.
-x – 5y = 16
2x + 5y = -7
Respuesta :
baabaagreysheep
baabaagreysheep
27-02-2017
-x - 5y = 16
2x + 5y = -7
(add)
x = 9
(2 × 9) + 5y = -7
18 + 5y = -7
- 18
5y = -25
÷ 5
y = -5
I hope this helps!
Answer Link
stjblotuss
stjblotuss
27-02-2017
-x - 5y = 16
2x + 5y = -7
-----------------------
1x =9
x=9 substitute
-9 - 5y =16
+9 =9
--------------
-5y =25
25/-5 = -5
y= -5
Answer Link
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