SOLUTION: Solve using the multiplication principle first. Then use the elimination method.
2x+y=13
4x+2y=23
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Question 374087: Solve using the multiplication principle first. Then use the elimination method.
2x+y=13
4x+2y=23
Answer by sophxmai(62) (Show Source): You can put this solution on YOUR website!
1) 2x+y=13
2) 4x+2y=23
Multiply equation 1 by 2.
2x+7y=13
2(2x+7y)=2(13)
4x+14y=26
Let the result of above be equation 3.
3) 4x+14y=26
Subtract equation 3 from 2.
4x+14y=26
-4x+ 2y=23
0x+12y=3
From there, solve for y.
12y=3
y=
y=
Substitute y= in equation 1 (any equation works here).
2x+y=13
2x+=13
2x=12-
x=
x=
x=5.875
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