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Simplify the expression 3(4x-5)+4(2x+6)=_______

 Oct 19, 2015
 #1
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Simplify the expression 3(4x-5)+4(2x+6)=

 

Simplify the following:
3 (4 x-5)+4 (2 x+6)

3 (4 x-5) = 12 x-15:
12 x-15+4 (2 x+6)

4 (2 x+6) = 8 x+24:
8 x+24+12 x-15

Grouping like terms, 12 x+8 x-15+24 = (12 x+8 x)+(-15+24):
(12 x+8 x)+(-15+24)

12 x+8 x = 20 x:
20 x+(-15+24)

24-15 = 9:
Answer: | 
| 20x + 9

 Oct 19, 2015

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