Question

Which of the values for x and y make the equation 2x + 3y + 4 = 15 true?

A)x = 6, y = 3
B)x = 3, y = 5
C)x = 6, y = 4
D)x = 1, y = 3

Answer 1

@AZ

Answer 2

Plug in the values. Which answer choices makes the equation true?

I'll do answer choice A as an example for you
x = 6, y = 3

2x + 3y + 4 = 15
2(6) + 3(3) + 4 = 15
12 + 9 + 4 = 15
21 + 4 = 15
25 =15
\( 21 \neq 15\)

21 does not equal 15 so it is not true. That means answer choice A is wrong.

Can you plug in the other answer choices and see which one makes the equation true?

Answer 3

i have no clue on this one

Answer 4

Replace x and y with each answer choice and solve it

Answer 5

The correct x and y should give you 15 = 15
That's the solution

Answer 6

i exit out A?

Answer 7

Yes, you can eliminate it.

Let's look at B.

x = 3, y = 5

2x + 3y + 4 = 15

Replace x with 3 and replace y with 5

Solve it. What do you get?

Answer 8

3=5=y

Answer 9

wat.

Answer 10

wut.

Answer 11

how even

Answer 12

im trash at math srry

Answer 13

2x + 3y + 4 = 15

B says x = 3, y = 5

PLUG IT IN

Answer 14

(2*3) + (3*5) + 4 =15

do the math

Answer 15

simplify it

Answer 16

uum idk how to simplify

Answer 17

what is 2*3

Answer 18

6

Answer 19

What is 3*5

Answer 20

Can you add numbers??

Answer 21

duh

Answer 22

then add them

Answer 23

ohh

Answer 24

21

Answer 25

15+6= 21

Answer 26

(2*3) + (3*5) + 4 =15

15 + 6 + 4 = 15

21 + 4 = 15

What is 21 + 4

And does it equal to 15?

Answer 27

21 + 4 = 25

Answer 28

does that equal to 15?

does x=3 and y=5 make the equation true?

for the equation to be true, we should be getting 15 = 15

Answer 29

2, 3

Answer 30

what does that even mean

Answer 31

2 and 3

Answer 32

... and??

Answer 33

does 25 equal to 15?

Answer 34

yes

Answer 35

Since 15 equals 25

I have 15 dollars and you have 25 dollars.

Will you give me your 25 dollars for my 15 dollars?
Because apparently 25 equals 15 now

Answer 36

@rxcklesskaisher

Answer 37

its not equal

Answer 38

@AZ ?

Answer 39

obviously

Answer 40

now plug in x = 6, y = 4

just like how we did it the previous two times

Answer 41

ofc
i was being mad slow

Answer 42

by simplifing?

Answer 43

ok its going to be 100 replies

Answer 44

... so what did you get by replacing x and y with those values?

Answer 45

Here let me add colors to help you and make things bigger so you can't miss it

\(\Large \color{red}{x} = \color{red}{6}\)
\(\Large \color{green}{y} = \color{green}{4}\)

Where did I get these numbers from? I got it from answer choice C. We already did the numbers from answer choice A and B and we found that it does not make the equation true because it does not give us 15 = 15


What is our equation?

This is our equation
\(2x + 3y + 4 = 15 \)

Answer 46

JUST PLUG IN THE NUMBERS

\(\Large \color{red}{x} = \color{red}{6}\)
\(\Large \color{green}{y} = \color{green}{4}\)


\(\Large 2\color{red}{x} + 3\color{green}{y} + 4 = 15 \)

REPLACE THE LETTERS WITH THE NUMBERS

\(\Large 2\color{red}{(6)} + 3\color{green}{(4)} + 4 = 15 \)

Do the multiplication and then then add the numbers.

What is 2* 6 = ??
What is 3 * 4 = ??

Add (2*6) + (3*4) + 4

Do you get 15??