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3 years ago

X (2y + 7) + y (9 + 5x)

Mathematics

1 answer:

Alenkasestr [34]3 years ago

6 0

After solving the expression $x (2y + 7) + y (9 + 5x)[\tex] we get [tex]7xy+7x+9y$

Step-by-step explanation:

Solving the expression: $x (2y + 7) + y (9 + 5x)[\tex]Solving:[tex]x (2y + 7) + y (9 + 5x)\\Multiplying\,\,with\,\,term\,\,in\,\,bracket\\=2xy+7x+9y+5xy\\Combining\,\,like\,\,terms\,\,\\=2xy+5xy+7x+9y\\=7xy+7x+9y$

After solving the expression $x (2y + 7) + y (9 + 5x)[\tex] we get [tex]7xy+7x+9y$

Keywords: Addition of Polynomials

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Step-by-step explanation:

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The sum of two numbers is 21. The larger number is 6 less than two times a number. What are the two numbers?

vovangra [49]

<h3><u>The value of the smaller number, y, is equal to 9.</u></h3><h3><u>The value of the larger number, x, is equal to 12.</u></h3>

x + y = 21

x = 2y - 6

We have a value for x, so we can plug it into the original equation to solve for y.

2y - 6 + y = 21

Combine like terms.

3y - 6 = 21

Add 6 tot both sides.

3y = 27

Divide both sides by 3.

y = 9

Now that we have a value for x, we can plug it into the 2nd equation to solve for x.

x = 2(9) - 6

x = 18 - 6

x = 12

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