Simplify each expression.1. -n+9n+3-8-8n2. 3(-4x+5y)-3x(2+4)5. 5-4y+x+9y7. -2x+3y-5x-(-8y)

Bevan Mcdonald 2021-01-31 Answered

Simplify each expression.
1) n+9n+388n
2) 3(4x+5y)3x(2+4)
3) 54y+x+9y
4) 2x+3y5x(8y)

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Expert Answer

Dora
Answered 2021-02-01 Author has 98 answers

1) n+9n+388n

=(n+9n8n)+(38)

=n(1+98)+(38)

=n(88)+(5)

=nx0+(5)=0+(5)=5
2) 3(4x+5y)3x(2+4)

=3(4x+5y)+(3x)(2+4)

=3(4x+5y)+(3x)(6)

=(12x)+15y+(18x)

=15y+(12x+18x)

=15y+(30x)=15y30x=15(y2x)
3) 54y+x+9y

=(9y4y)+x+5 

=y(94)+x+5

=5y+x+5

=(5y+5)+x=5(y+1)+x
4) 2x+3y5x(8y)

=2x+3y5x+8y

=(3y+8y)+(2x+5x)

=y(3+8)+x(2+5)

=11y+(7x)=11y7x
Answer:

1) 5

2) 15(y2x)

3) 5(y+1)+x

4) 11y7x

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