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Kadyn Pearson
Mathematics
10 July, 04:40
Use linear combination. To solve system
-2x+7y=10
X-3y=-3
+4
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2
)
Wade Taylor
10 July, 04:54
0
-2x + 7y = 10 ⇒ - 2x + 7y = 10
x - 3y = - 3 ⇒ - 2x + 6y = 6
y = 4
-2x + 7 (4) = 10
-2x + 28 = 10
-28 - 28
-2x = - 18
-2 - 2
x = 9
(x, y) = (9, 4)
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Uriah Dougherty
10 July, 04:54
0
So
use elimintation
multily second equation by 2
2x-6y=-6
add to first equation
2x-2x+7y-6y=10-6
y=4
subsitute
x-3 (4) = - 3
x-12=-3
add 12 to both sdies
x=9
x=9
y=4
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