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o-na [289]
3 years ago
15

PLZ ANSWER ASAP! What is the solution of the system of equations? {7/2x−1/2y=9/2 3x−y=5 Enter your answer in the boxes.

Mathematics
1 answer:
Reil [10]3 years ago
7 0

\frac{7}{2} x -  \frac{1}{2} y =  \frac{9}{2}  same \: as \: 7x - y = 9
7x-y=9
3x-y=5 (multiply by -1 both sides of the equation)

7x-y=9
-3x+y=-5 (now add both equations)

7x-3x-y+y=4
4x=4 (divide by 4 both sides of the equation)

x=1

y=3x-5=3×1-5=-2

y= -2

answer: x=1, y=-2
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