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bija089 [108]
3 years ago
10

X-3y=-12; 2x+11y=-7 .algebra 2, elimination. I just need help solving

Mathematics
1 answer:
AlladinOne [14]3 years ago
5 0
<h3><u>The value of x is equal to -9.</u></h3><h3><u>The value of y is equal to 1.</u></h3>

x - 3y = -12

<em><u>Add 3y to both sides.</u></em>

x = -12 + 3y

<em><u>Plug the value of x into the second equation.</u></em>

2(-12 + 3y) + 11y = -7

<em><u>Distributive property.</u></em>

-24 + 6y + 11y = -7

<em><u>Add 24 to both sides.</u></em>

6y + 11y = 17

<em><u>Combine like terms.</u></em>

17y = 17

<em><u>Divide both sides by 17.</u></em>

y = 1

Now that we have the value of y we can plug it into the original equation to find the value of x.

x - 3(1) = -12

x - 3 = -12

<em><u>Add 3 to both sides.</u></em>

x = -9


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