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anonymous
 4 years ago
Solve the system of equations by the addition method.
Choose one answer.
a. (2, 1)
b. (2, 1)
c. (2, 1)
d. (2, 1)
anonymous
 4 years ago
Solve the system of equations by the addition method. Choose one answer. a. (2, 1) b. (2, 1) c. (2, 1) d. (2, 1)

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anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0THe addition method is adding one term to another to get a variable to cancel out.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0You can multiply the equations by various numbers first to get the variables just right so they cancel

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0It doesn't matter what variable we choose to cancel out. Let's do x

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0We need the number in front of the first x to be the opposite of the second x, like 5, 5, or 3, 3, so they'll add to zero.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Lets multiply the first equation by 5 and the second one by 3 so we'll get a 15x and a 15x

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.05(3x+7y=1) 15x+35y=5

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0second equation: 3(5x4y=14) 15x+12y=42

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Do you see what I did there?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0kk... now u just add the equations together. 15x+35y=5 + 15x=12y=42

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0(4 second equation: supposed to be 15x+12y=42)

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0so. 15x+15x=0. 35y+12y=47y 5+42=47 0+47y=47

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Now just solve for y. 47y=47 y=1

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Now that u know what y is, plug it back into an equation (it doesn't matter which) and solve for x

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.03x+7y=1 3x+7(1)=1 3x7=1 3x=6 x=2

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0It looks like you want your final answer to be an ordered pair, like a point on a graph. a point is always in the form (x,y), so your final answer is 2,1
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