For question 5, use elimination or substitution. 5) x + 2y = 16 X- y = -2

asked Feb 12, 2022 32.4k views

2 votes

For question 5, use elimination or substitution.
5) x + 2y = 16
X- y = -2

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5 votes

Answer:

Explanation:

x + 2y = 16 _______(1)

x - y = -2_______(2)

(1) - (2)

$x + 2y - (x - y) = 16 - ( - 2) \\ x + 2y - x + y = 16 + 2 \\ 2y + y = 18 \\ 3y = 18 \\ y = (18)/(3) \\ y = 6 \\$

y = 6,

$x + 2y = 16 \\ x + 2(6) = 16 \\ x + 12 = 16 \\ x = 16 - 12 \\ x = 4 \\$

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