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Minchanka [31]
2 years ago
13

-3x + 3y =3 -5x + y =13 Solve as a whole number

Mathematics
2 answers:
Gre4nikov [31]2 years ago
7 0

Answer:

x = -3, y = -2

(-3, -2)

Step-by-step explanation:

-3x + 3y = 3

-5x + y = 13

-5x + y = 13

+5x    +5x

y = 5x + 13

-3x + 3(5x + 13) = 3

-3x + 15x + 39 = 3

12x + 39 = 3

     - 39   -39

12x = -36

/12    /12

x = -3

Now, we solve for y:

-5x + y = 13

-5(-3) + y = 13

15 + y = 13

-15      -15

y = -2

(x, y) -> (-3, -2)

Hope this helps!

anzhelika [568]2 years ago
4 0

Answer:

X = 3 x − 14

y = − x + 5

Step-by-step explanation:

Solve for the first variable, then substitute the result into the other equation.

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2 years ago
Margie says the set of numbers, 0.1, -1, -2 1/4, 3, are in order from least to greatest. What is her error?
ANEK [815]

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7 0
3 years ago
Read 2 more answers
36.8% of what number is 28.52?
laila [671]
To solve this problem we can use the rule of 3 and solve for x. Let's equate it as the following:

28.52/x=36.8/100

Why did I represent it like that?
In the first numerator we have the known quantity (28.52). In the second numerator we'll need the percentage that 28.52 represents (because the second fraction will represent percents). This will be 36.8%
The first denominator is x (the number we want to figure out). That number represents 100%. Hence the 100 as the second denominator.

To solve for x we need to do the following:
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8 0
2 years ago
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