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Rachael Kirby
Mathematics
18 October, 08:03
Solve by elimination.
5x-7y=19
7x-7y=-7
+5
Answers (
1
)
Adrianna Le
18 October, 08:29
0
(x, y) = (-13,-12)
Step-by-step explanation:
5x - 7y = 19
7x - 7y = - 7 Multiply both sides of the equation by - 1
Which then gives you:
5x-7y=19 Sum the equations vertically to eliminate
-7x+7y=7 at least on variable
-2x=26 Divide both sides of the equation by - 2
X=-13 Substitute the given value of x into the equation 7x - 7y = -7
7 x (-13) - 7y=-7 solve the equation for y
y=-12
Thus gives you (-13,-12)
Hope this was useful! Sorry if it's wrong.
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