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09-02-2018
Mathematics

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Berta worked to solve a system of equations. 4x + y = –5 x – y = –5 Step 1: ??? Step 2: x = –2 Step 3: 4(–2) + y = –5 Step 4: –8 + y = –5 Step 5: y = 3 Berta determined that the solution is (–2, 3). Which could have been the equation Berta found in step 1?

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henaadlakhap3tm5j henaadlakhap3tm5j

09-02-2018

5x= -10
I hope I could help.

Ver imagen henaadlakhap3tm5j

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Аноним Аноним

09-02-2018

4x + y = -5
x - y = -5 Adding;_
5x = -10
x = -2

required equation is 5x = -10

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