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4 years ago

Solve for the 2 unknowns: 3y + 3x =24 6y+3x = 39

1 answer:

8 0

3y + 3x =24
6y+3x = 39 
subtract first equation from second
6y-3y+3x-3x=39-24
3y=15
y=5
put this value in first equation 3y+3x=24
3*5+3x=24
15+3x=24
3x=9
x=3
Answer: (3;5)

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4 years ago

2x + y = ? x = -3 y = 4

Marta_Voda [28]

Answer:

-2

Step-by-step explanation:

Since,

it given that

x = -3

y = 4

and the equation is:

2x + y = ?

Thus we can substitute:

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Hence,

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2 years ago