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Introduction to simultaneous equations
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We are going to determine whether the point (4, -3) is a solution of the system of equations:
2x + 7y=-13
3x+8y= -20
Using the first equation, 2x + 7y= -13, find the value of y when X = 4.
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talohany

Step-by-step explanation:

2x+7y=-13

2(4)+7y=-13

8+7y=-13

7y=-13-8

7y=-21

y=-21/7

y=-3

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