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guajiro [1.7K]
3 years ago
8

What is the value of x in the solution to this system of equations?

Mathematics
1 answer:
siniylev [52]3 years ago
8 0

Answer:

D) x=9

Step-by-step explanation:

x = 2y- 5

2y = x + 5

y = (x+5) / 2

4x + 7(x+5)/2 = 85

8x + 7x + 35 = 85*2

15x + 35 = 170

15x = 170 - 35 = 135

x = 135/15 = 9

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