i need help with these bcuz i do know have to do them.
asked Apr 26, 2012 in Word Problem Answers by anonymous

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1 Answer

3x-9=27...Add 9 to each side of the equation and therefore, that will

leave you with 3x=36.  Then, divide 3 to each side of this equation

and that will leave you with X=12(answer). Replace x with the number 12 and you

will have 3(12)-9=27...36-9=27.

 

Do the same with 2x+4=44. Subtract 4 from each side of the equation and

therefore, you will have 2x=40. Then divide 2 to each side of this equation

which will leave you with x=20(answer). Replace x with the number 20 and you

will have 2(20)+4=44. Thus, 40+4=44.

 

4(7x-9)+6=82...Remember P.E.M.D.A.S, Multiply 4 by 7x, this equals 28x. Then multiply 4 by -9=-36. Now, you have 28x-36+6=82. Combine like terms. Which is -36+6=-30. So, 28x-30=82. Add 30 to both sides of the equation. This leaves you with 28x=112. Divide 28 to both sides. X=4(answer). Thus, replace 4 with x.
answered Oct 8, 2012 by missalisa Level 1 User (740 points)

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