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monkey*
 one year ago
Precal Help!
Solve algebraically.
Y+2x=7
Y=5x
monkey*
 one year ago
Precal Help! Solve algebraically. Y+2x=7 Y=5x

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0the second equation is already solved for y, so substitute it into the first and you get \[5x+2x=7\] solve for x, then go back to the 2nd equation to solve for y

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0right, now put the 2 into the second equation for x and solve for y

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0not quite. You want to use the original equations for this part. If you use the first one. y + 2x = 7 Now sub the 2 for x y + 2(2) = 7 Solve for y If you use the second. y = 5  x sub the 2 for x y = 5  2 You get the same value for y with either equation

monkey*
 one year ago
Best ResponseYou've already chosen the best response.1So the solutions would be (2,3)?

monkey*
 one year ago
Best ResponseYou've already chosen the best response.1Okay, thank you so much!
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