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yo someone help me with my benchmark

 Dec 5, 2016
 #1
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Tell me the questions, I will answer thy request.cheeky

 Dec 5, 2016
 #2
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Which is the correct solution for the equation below? 

2(r + 5) – 4(r – 1) = 32

 Dec 5, 2016
 #3
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2(r+5)-4(r-1)=32

We simplify the equation to the form, which is simple to understand

2(r+5)-4(r-1)=32

 

Reorder the terms in parentheses

+(+2r+10)-4*(r-1)=32

 

Remove unnecessary parentheses

+2r+10-4+*(+r-1+)=+32

 

Reorder the terms in parentheses

+2r+10+(-4r+4)=32

 

Remove unnecessary parentheses

+2r+10-4r+4=+32

 

We move all terms containing r to the left and all other terms to the right.

+2r-4r=+32-10-4

 

We simplify left and right side of the equation. -

2r=+18

 

We divide both sides of the equation by -2 to get r.

r=-9

 

r=-9 is th answer

MathPeacock  Dec 5, 2016

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