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To simplify the expression below, what should you do first?
4y-yx(3-7y)+5+2(8-y)
Combine all like terms.
Subtract inside parentheses.
Subtract y from 4y.
Distribute the –y and 2 to the terms in the parentheses.

Sagot :

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Answer:

4y - yx(3-7y) + 5 + 2(8-y) equals to 7xy^2  − 3xy  +  2y  +  21

Step-by-step explanation:

1. Multiply numbers inside the parentheses.

4y - yx(3-7y) + 5 + 2(8-y)= 4y  −  3yx  + 7y^2x  +  5  +  16  −  2y

2. Then combine all like terms

4y  −  3yx  + 7y^2x  +  5  +  16  −  2y

4y - 2y = 2y

2y  −  3yx  +  7y^2x  +  5  +  16

5 + 16 = 21

2y  −  3yx  +  7y^2x  +  21

3. After combining like terms, simplify.

2y  −  3yx  +  7y^2x  +  21

Move y^2

2y  −  3yx  +  7xy^2   +  21

Move 2y

−  3yx  +  7xy^2   + 2y +  21

Reorder - 3yx and 7xy^2 (7xy^2 is more bigger than -3yx)

7xy^2   −  3yx  + 2y +  21

4. Final answer = 7xy^2  − 3xy  +  2y  +  21

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