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Mrac [35]
3 years ago
15

X - 2y = 5 -3x + 2y = 7 A.x=3, y=-1 B.x = 11, y = 12 C.x=-6, y =- D. x= 3, y=1

Mathematics
2 answers:
Rina8888 [55]3 years ago
7 0
The answer is A

3 - 2(-1) = 5

-3(3) + 2(-1) = 7
posledela3 years ago
4 0

Answer:

x=-6,y=-5.5

Step-by-step explanation:

Given Equations:

               x - 2y = 5   equation:1

           -3x + 2y = 7   equation:2

Adding equation:1 and equation:2

     x - 2y+(-3x + 2y) = 5+7\\\\ x-2y-3x+2y=12\\\\-2x=12\\\\x=-\frac{12}{2}\\\\ x=-6\\

Putting value of 'x' in equation:1

                     x - 2y = 5

                   -6-2y=5\\\\-2y=5+6\\\\-2y=11\\\\y=-\frac{11}{2} \\\\y=-5.5

x=-6,y=-5.5

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