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3 years ago

11

Simplify, 99/121 whats the GCF?

1 answer:

Nadya [2.5K]3 years ago

3 0

To find the GCF:

-- List the factors of the first number.
-- List the factors of the second number.
-- Make a short list of the factors that show up for BOTH numbers.
-- Find the biggest number on the short list.

Factors of the first number (99): <u>1</u>, 3, 9, <u>11</u>, 33, 99 .

Factors of the second number (121): <u>1</u>, <u>11</u>, 121 .

Short list (factors that show up for both numbers): 1, 11

Biggest number on the short list: <em>11</em>

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3 years ago

Given that 3x – 4y= 22<br> -<br> Find & when y = -7

Liono4ka [1.6K]

<h2>Answer:</h2>

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<h2><em><u>Step-by-step explanation:</u></em></h2>

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2 years ago

Solve the system of equations by using substitution.<br> x+8y=-2<br> x-3y=20

zysi [14]

Answer:

(14, -2)

Step-by-step explanation:

To solve by using substitution, begin by solving for a variable in the first equation. Let's solve for x:

$x+8y=-2\\x=-2-8y$

Now we know what <em>x</em> equals. Let's substitute this into the second equation:

$x-3y=20\\(-2-8y)-3y=20$

We can then simplify:

$-2-8y-3y=20$ Given equation

$-2-11y=20$ Combine y terms

$-11y=22$ Add 2

$y=-2$ Divide by -11

So, we now know the value of y = -2.

To find the value of X, we can substitute the value of Y into one of the equations. Let's use the first one:

$x+8y=-2$

$x+8(-2)=-2$ Substitute for y

$x-16=-2$ Distribute 8

$x=14$ Add 16

So, we now know the value of x = 14.

Therefore, we know a solution to the system of equations is (14, -2).

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