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Equation M: y = x + 4 Equation P: y = 3x + 6 Which of the following is a step that can be used to find the solution to the set of equations? x = 3x + 6 x + 4 = 3x + 6 x + 6 = 3x + 4 x = 3x
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4 votes
Equation M: y = x + 4

Equation P: y = 3x + 6

Which of the following is a step that can be used to find the solution to the set of equations?

x = 3x + 6
x + 4 = 3x + 6
x + 6 = 3x + 4
x = 3x

User David Witherspoon
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7.2k points

1 Answer

4 votes
Solve the system

y = x + 4
y = 3x + 6

Note that both equations have been solved for y. Thus, you can set y = y, or

x+4=3x+6. Simplifying, -2 = 2x, or x = -1.

Another way to look at this would be x + 4 = 3x + 6.
User Brandon Ling
by
6.2k points
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