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— 4х + 7y = 20 у = 3х + 15
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17 votes
— 4х + 7y = 20
у = 3х + 15

User Manu K Mohan
by
3.3k points

1 Answer

4 votes

Answer:

x=-5

Explanation:


-4x+7(3x+15)=20\\ -4x+21x+105=20\\ 17x+105=20\\ 17x=20-105\\ 17x=-85\\ x=-5

User Harry Stevens
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