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Karolina [17]
3 years ago
10

there are 27 red or blue marbles in a bag. the number of red marbles is 5 less than 3 times the number if blue marbles. how many

red marbles are in the bag? how many blur marbles are in the bag
Mathematics
1 answer:
kirill115 [55]3 years ago
6 0

Let
x--------> The number of red marbles
y--------> The number of blue marbles

we know that

equation


equation

equate equation and equation


therefore

the answer is
The number of red marbles is
The number of blue marbles is

Read more on Brainly.com - brainly.com/question/51517#readmore
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John, Johan, and Jonathan collect postage stamps. Johan and Jonathan have the same number of stamps. Two times Johan’s collectio
MrRissso [65]

The number of postage stamps in John’s collection is 27.

We have given that,

John, Johan, and Jonathan collect postage stamps. Johan and Jonathan have the same number of stamps.

<h3>What is an elimination method?</h3>

The elimination method is the process of eliminating one of the variables in the system of linear equations using the addition or subtraction methods in conjunction with the multiplication or division of coefficients of the variables.

Johan and Jonathan have the same number of stamps.

Let x be the Johan and Jonathan postal stamps.

Let y be the John postal stamps.

Two times Johan’s collection is eleven less than five times John’s collection.

2x = 5y - 11............(1)

Three times Jonathan’s collection is three less than seven times John’s collection.

3x = 7y - 3............(2)

Multiply equation 1 with 3

3(2x = 5y - 11)

⇒ 6x = 15y - 33.........(3)

Multiply equation 2 with 2

2(3x = 7y - 3)

⇒ 6x = 14y - 6.............(4)

Subtract equation 4 from equation 3

⇒ 6x - 6x = 15y - 33 - (14y - 6)

⇒ 0 = y - 27

⇒ y = 27

Hence, the number of postage stamps in John’s collection is 27.

Find more information about the elimination method here

brainly.com/question/13877817

#SPJ1

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1 year ago
PLEASE HELP
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A AsA  the angle a and d are equal and side ae and de are egual and angles e are equal
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3 years ago
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