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9x-3y=9, 3x+10y=6 substitution
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9x-3y=9, 3x+10y=6 substitution

User Ginevra
by
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1 Answer

5 votes

Answer:

x = 1.1

y = 0.27

Explanation:

9x - 3y = 9 [1]

3x + 10y = 6 [2]

multiply [2] by 3 and label it [3]

9x + 30y = 18 [3]

[1] - [3],

9x - 3y = 9 [1]

9x + 30y = 18 [3]

‐----------------

-33y = -9

y = 0.27

substitute y = 0.3 into [2]

3x + 10y = 6 [2]

3x + 10(0.27) = 6

3x = 3.3

x = 1.1

User Vitakot
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4.1k points
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