+0  
 
+5
548
2
avatar+9 

im horrible at reducing and i found it hard to find help online,

i get the sentence: 3(s + 8) - 4(2s -5)

 

any advice on where to start reducing?? 

 Aug 31, 2014

Best Answer 

 #2
avatar+118608 
+5

Animoz has asked for more help which I am happy to provide. (Next time could you please ask here on the forum.  Thank you.   

$$3(s+8) \\
= 3*s + 3*8 \\
= 3s+24\\\\
-4(2s-5)\\
=-4*2s -4*-5\\
=-8s--20\\
=-8s+20\\\\
so\\
3(s+8)-4(2s-5)\\
=3s+24-8s+20\\
=3s-8s+24+20\\
=-5s+48$$

 

Why don't you try these by yourself,  post the answers and I will see if you get them right.

If you choose to do this then please post the question with the working and the answer thank you.

1) 6(x+9)

2) 12(m-4)

3)  -3(t+5)

4)  -6x(x+3y)

5)  5(x-3)-2(m-4)

 Aug 31, 2014
 #1
avatar+118608 
0

You start by expanding the brackets independantly BUT remember the minus sign belongs with the 4.

 

Give it a go and I'll check what you've done.

 Aug 31, 2014
 #2
avatar+118608 
+5
Best Answer

Animoz has asked for more help which I am happy to provide. (Next time could you please ask here on the forum.  Thank you.   

$$3(s+8) \\
= 3*s + 3*8 \\
= 3s+24\\\\
-4(2s-5)\\
=-4*2s -4*-5\\
=-8s--20\\
=-8s+20\\\\
so\\
3(s+8)-4(2s-5)\\
=3s+24-8s+20\\
=3s-8s+24+20\\
=-5s+48$$

 

Why don't you try these by yourself,  post the answers and I will see if you get them right.

If you choose to do this then please post the question with the working and the answer thank you.

1) 6(x+9)

2) 12(m-4)

3)  -3(t+5)

4)  -6x(x+3y)

5)  5(x-3)-2(m-4)

Melody Aug 31, 2014

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