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lorasvet [3.4K]
3 years ago
8

A solution of a system of linear equations x - y = 5 - 3 x + y = - 1

Mathematics
1 answer:
Vanyuwa [196]3 years ago
8 0

Answer:

one solution : (-2 ; -7)

Step-by-step explanation:

hello :

x - y = 5 ....(*)

- 3 x + y = - 1 ....(**)

by (*) : y=x-5

by(**) : y = 3x-1

3x-1 = x -5

3x-x=-5+1

2x= -4

x= -2

but : y = x-5    so : y= -2-5=-7

one solution : (-2 ; -7)

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