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Jet001 [13]
3 years ago
10

Use the substitution method to solve the system of equations.

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

Answer:

A x=5 y=-2

Step-by-step explanation:

y = x − 7 ; 3 x + 7 y = 1

y = x - 7

Substitute

x − 7 for y in 3 x + 7y = 1:

3x + 7y = 1

3x + 7(x-7) = 1

10x - 49 = 1

10x = 50

x = 5

Substitute:

y = 5 - 7

y = -2

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