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Zarrin [17]
3 years ago
11

How to solve using Substitution or Elimination??? Help!!! y=3x-1 y=2x+2

Mathematics
2 answers:
disa [49]3 years ago
7 0
The answer is x=3 and y=8, here’s the work—


Y=3x-1
Y=2x+2
2x+2=3x-1
2=x-1
X=3

3(3)-1=y
9-1=y
8=y
Iteru [2.4K]3 years ago
3 0

Answer:

x=3

y=8

Step-by-step explanation:

the given equations are y=3x-1 --------(1)

and y=2x+2---------(2)

Using substitution method,

and solving y=3x-1

y+1=3x

or y+1/3 =x ------(3)

Putting the value of x= y + 1 / 3 in equation 2

y= 2x+2

or, y = 2 ( y + 1/3) +2

or, y= 2y + 2 / 3 <u>+</u><u>2</u>

<u>or</u><u>,</u><u> </u><u>y</u><u> </u><u>=</u><u> </u><u>2y</u><u> </u><u>+</u><u> </u><u>2</u><u> </u><u>+</u><u> </u><u>6</u><u> </u><u>/</u><u>/</u><u> </u><u>3</u><u> </u><u>(</u> Taking LCM)

Or, 3 y = 2y + 2 + 6 ( <u>the</u><u> </u><u>denominator</u><u> </u><u>gets</u><u> </u><u>multiplied</u><u> </u><u>to</u><u> </u><u>y</u><u>)</u>

OR, 3 Y - 2Y =6 PLUS 2

or y = 8

therefore, y=8

now substituting the value of y=8 in equation (3)

y + 1 /3 = x

or ,,, 8 plus 1 by 3 =x

or,,,,, 9 by 3 =x

Therefore, x is 3

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Answer:

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Step-by-step explanation:

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Hope this helps!

7 0
3 years ago
CAN SOMEONE PLS HELP ME WITH BOTH OF THESE QUESTIONS
dusya [7]

The amount in the new checking account is 600 dollars

The operation (5 α 3) + (7 α 5) is 46.

<h3>How to find the amount in the checking account?</h3>

She had 1000 dollars in her checking account. she had a loan of 800 dollars to pay.

After paying her loan form her checking account the balance of the loan reduce to half.

Therefore, she paid 800 / 2 = 400 dollars for her loan

Hence,

Her new checking account = 1000 - 400 = 600 dollars

<h3>How to find value of an operation?</h3>

a α b = ab - a + b

Therefore,

(5 α 3) + (7 α 5)

(5 α 3) = 5(3) - 5 + 3 = 13

(7 α 5) = 7(5) - 7 + 5 = 33

Therefore,

(5 α 3) + (7 α 5) = 13 + 33 = 46

Note: I can't use the at symbol because it is a swear word.

learn more on operation and checking account here: brainly.com/question/583664

#SPJ1

8 0
2 years ago
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Vinil7 [7]

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3 years ago
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Three times one number minus another number equals 34. If the sum of the numbers is 22, what are the two numbers?
lubasha [3.4K]

Answer:

8 and 14

Step-by-step explanation:

let the 2 numbers be x and y with x > y

We can model the situation using the following 2 equations

x + y = 22 → (1)

3x - y = 34 → (2)

adding the equations term by term will eliminate the term in y

(x + 3x) + (y - y) = (22 + 34)

4x = 56 ( divide both sides by 4 )

x = 14

substitute x = 14 into (1)

14 + y = 22 ⇒ y = 22 - 14 = 8







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3 years ago
Which group contains elements that are most likely to have similar properties?
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3 0
3 years ago
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