Use the substitution method to answer the system of equations. 5x + 2y = 1 y = -x + 2

Mathematics

1 answer:

frosja888 [35]3 years ago

7 0

Answer:

x = -1

Step-by-step explanation:

5x + 2y = 1 (eqn 1)

y = -x + 2 (can also be written as y = 2 - x)

subbing y = -x +2 in eqn 1,

5x + 2(2-x) = 1

5x + 4 - 2x = 1

3x = 1 - 4

3x = -3

x = -1

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