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IRINA_888 [86]
3 years ago
13

Solve using elimination. -x – 5y = 16 2x + 5y = -7

Mathematics
2 answers:
Sergio039 [100]3 years ago
6 0
-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!
iVinArrow [24]3 years ago
4 0
-x - 5y = 16
2x + 5y = -7
-----------------------
1x =9

x=9 substitute

-9 - 5y =16
+9        =9
--------------
      -5y =25

25/-5 = -5

y= -5

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