Help Please.
2006-12-15 05:00:31 · 7 answers · asked by Dave 1 in Science & Mathematics ➔ Mathematics
21x + 77 = 27 - 54x
21x + 54x = 27 - 77
75x = -50
x = -50/75 = -2/3
2006-12-15 05:03:02 · answer #1 · answered by Jim Burnell 6 · 2⤊ 0⤋
7(3x + 11) = 9(3 - 6x)
21x + 77 = 27 - 54x (Add 54x and subtract 77 from both sides)
75x = -50 (Divide both sides by 75)
x = -50/75 or - 2/3
Check:
7(3(-2/3) + 11) = 9(3 - 6(-2/3))
7(-2 + 11) = 9(3 + 4)
7(9) = 9(7)
63 = 63
QED
2006-12-15 14:52:42 · answer #2 · answered by CSUFGrad2006 5 · 0⤊ 1⤋
oK oK oK
HEE IS THE STEP BY STEP ANSWER
7( 3x + 11 ) = 9( 3 - 6x )
using the distritive method we clear the parentesis as below :
21x + 77 = 27 - 54x
then we subtract 21x from both sides Because the Law of equations states that the action you do to one side of the equation you have to do to the other side of the equation there fore the equation should look as below :
77 = 27 - 75 x
now we subtract 27 from both sides because of the above stated rule
therefore the equation should look as below
50 = 75x
now we divede both sides by the coefficient of x and we will have the value for x
X = 2/3
2006-12-15 13:21:03 · answer #3 · answered by Anonymous · 1⤊ 1⤋
Its ok to check your work on here but homework assignments like this are very valuable to help you get faster solving trivial algebra:
21x + 77 = 27 - 54x
75x = -50
x = -2/3
2006-12-15 13:13:21 · answer #4 · answered by tomaso4 3 · 1⤊ 0⤋
7(3x+11)=9(3-6x)
21x+77=27-54x
75x=-50
x=-50/75
x=-2/3
2006-12-15 13:15:04 · answer #5 · answered by ram kumar 2 · 1⤊ 0⤋
21x + 77 = 27 - 54x
21x + 54 x = 27 -77
77 x = - 50
x = -50/77
2006-12-15 13:06:05 · answer #6 · answered by NIK..! 5 · 0⤊ 1⤋
21x + 77 = 27 - 54x
21x + 54x = 27 - 77
75 x =-50
x = 2/3 = 0.6666667
I hope you are not asking me to answer your homework assignment
2006-12-15 13:05:04 · answer #7 · answered by Renaud 3 · 2⤊ 0⤋