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(2,?) is on the line 4x – 5y = -7. Find the other half of the coordinate.

Sagot :

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[tex](x,y)=(2,?) \\ x=2 \\ y=? \\ \\ 4x-5y=-7 \\ 4 \times 2-5y=-7 \\ 8-5y=-7 \\ -5y=-7-8 \\ -5y=-15 \\ y=\frac{-15}{-5} \\ y=3[/tex]

The coordinate is (2,3).
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