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svet-max [94.6K]
3 years ago
9

5x – 2y = 1 x + 3y = -7 How to solve by substitution

Mathematics
1 answer:
Katen [24]3 years ago
4 0

Step-by-step explanation:

substitute x for 3 and y for 7

5×3-2y=1

15-2×7=1

15-14=1

substitute y for -5 and x for 8

8+3×-5=-7

8+-15=-7

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