Posted by Diane on Sunday, July 5, 2009 at 11:18pm.
Solve for
3x + 6Y  9z = 3
5x  7y + 10z = 4
11x +4y  6z = 2

college algebra  bobpursley, Sunday, July 5, 2009 at 11:32pm
take the first equation, and the third equation.
mulitiply the first by 2, and the third by 3.
6x+12y18z=6
33x+12y18z=6
that implies that x is zero.
then the first and second
6y9z=3
7y+10z=4
multply the first by 10, the second by 9
60y90z=30
63y+90z=36
add,
3y=6 or y=2
solve for z in any equation, check your answers.

college algebra  Reiny, Sunday, July 5, 2009 at 11:38pm
Since you don't specify which method, let's use good ol' elimination.
#1x2 > 6x+12y18z=6
#3x3 > 33x+12y18z=6
subtract, by luck both z and y disappear
x = 0
#2x3 > 15x21y+30z=12
#3x5 > 55x+20y30z=10
add
70xy=2 but x=0, so
y = 2
sub back into #3 to get z = 1
x=0
y=2
z=1

college algebra  Anonymous, Thursday, July 9, 2009 at 8:18pm
2x^3(2x^2+4x+3)
Answer This Question
Related Questions
 Algebra, check.  10z4=10z2 So I subtract 4 from the 2 right? and 10 from the ...
 college algebra  Solve the inequality algebraically 11x3¡Ý4x^2
 COLLEGE ALGEBRA ..HELP!  Solve by completing the square 12x^2+11x=5
 COLLEGE ALGEBRA  Solve by completing the square 12x^2+11x=5
 college algebra  solve the inequality algebraically 11x3 is greater than or ...
 algebra  college  Solve using the elimination method. Show your work. If the ...
 College Algebra  Solve using the elimination method. Show your work. If the ...
 Calculus  I've done everything I can think of to solve this, but I have no idea...
 math  I solved this problem 12x6=11x 6+6=0 11x+6 12x=11x+6 12x11x=x 11x11x=...
 algebra PLZ HELP!!!  y= 9/11x17 9x10y=179 You need to use parentheses to tell...
More Related Questions