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Archy [21]
3 years ago
6

Solve by Substitution

Mathematics
2 answers:
anastassius [24]3 years ago
7 0

Answer:

-9x-10y=12  \ -----(1)\\\\-3x+3=y  \ ------(2)\\\\substitute \ y \ in \ (1)\\\\-9x -10(-3x+3) =12\\\\-9x+30x-30=12\\\\21x= 12+30\\21x=42\\x=2\\\\\\substitute \ x \ in  \ (2)\\-3\cdot 2+3=y\\-6+3=y\\y=-3

x= 2, y = -3

Pavlova-9 [17]3 years ago
5 0
X= 2 and y= -3
Just substitute the value of y into the first equation add like terms and solve
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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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4 years ago
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