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Stella Mueller
Mathematics
28 July, 13:15
Solve using elimination.
- 8x + 2y = - 20
8x - 5y = 14
+3
Answers (
1
)
Jayvion Lester
28 July, 13:35
0
x = 3, y = 2
Step-by-step explanation:
~ Through process of elimination ~
1. - 8x + 2y = - 20
+ 8x - 5y = 14
2. Simplify to solve for y through simple algebra:
2y - 5y = - 20 + 14 ⇒ - 3y = - 6 ⇒ y = 2
3. Now substitute this value of y into the to equation - 8x + 2y = - 20 to get x:
- 8x + 2 (2) = - 20 ⇒
-8x + 4 = - 20 ⇒
-8x = - 24 ⇒
x = 3
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