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Phoebe Townsend
Mathematics
15 August, 08:02
3x+4y=43 find the value of y when x equals 9
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Jennifer Velasquez
15 August, 08:15
0
4=y or y=4 because substitute x which is 9 and do the inverse all operation until y is left.
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Ximena
15 August, 08:21
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To start take the equation and then plug in 9 for x
3x+4y=43
3 (9) + 4y=43
27+4y=43
Subtract 27 from each side to get all of the y's by themselves
27+4y-27=43-27
4y=16
Divide by four to get the value of one y
4y/4=16/4
y=4
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