how to work beginning algebra

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zflibaar

Mathematics

Description

how do you work this problem

-2(x +6)+3(2x-5)=3(x-4)+10

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Explanation & Answer

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To solve this problem, you first need to distribute the outer numbers to the inner numbers of the parentheses.  A general formula for this principle would look like this: a(b+c)=a*b+a*c.  Be careful with the positives and negatives though.  Another general formula: a(b-c)=a*b-a*c.  Now when 'a' is negative:  -a(b+c)=-a*b-a*c

-2(x+6)+3(2x-5)=3(x-4)+10      Distribute terms.

-2x-12+6x-15=3x-12+10           Now combine 'like' terms.

4x-27=3x-2                                Get the 'x' terms on one side to solve for x.

x=25




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Anonymous
Awesome! Made my life easier.

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