Isabel K.

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Linear Algebra

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Question:

4s+4=9

Isabel K.

Answer:

4s+4=9 4s=9-4 4s=5 divide both sides by 4 s=5\4

Pre-Algebra

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Question:

Simplify b-3+6-2b

Isabel K.

Answer:

b-3+6-2b collect like terms as follows b-2b-3+6 -b+3

Basic Math

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Question:

solve the following equation 2x + 12= 4x

Isabel K.

Answer:

First of all, collect like terms by bringing numbers with letters to one side of the equal sign as follows: 12=4x-2x Note that as 2x crosses the equal sign, its sign changes. Before crossing the equal sign 2x had a positive sign but after crossing the equal sign, it's now negative. 12=2x To find the value of x, divide both sides by 2 Therefore x=6

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