Posted by Sara! on Wednesday, June 9, 2010 at 5:29pm.
first one ...
multiply each term by 3 to get
9y + 5y = 24
14y = 24
y = 24/14 = 12/7
second ..
no solution
third ... multiply each term by 6 to get
9z - 34 = 4z - 9
easy from there
4th ....
give it a shot, it is so easy.
# 1 is wrong
and is # 4 no solution?
i cant get # 4!
#4,
-3a + 9 = 3a - 9
-6a = -18
a = -18/-6
a = 3
#1
I had y = 12/7
check:
Left Side
= 3(12/7) + 5(12/7) / 3
= 36/7 + 60/21
= 36/7 + 20/7
= 56/7 = 8
= right side
My answer is correct.
Did you type the equation correctly?
Related Questions
college - 1. Solve. 2x+3y+4z=2 5x-2y+3z=0 x-5y-2z=-4 A. (3, 4, 2) B. (-2 ,1, 2) ...
math - i need help with this problem 2x+2y+3z=-1 3x-5y-2z=21 7x+3y+5z=10
algebra - 1 A + (B + C)= (A + B) + C associative scalar quantity dot product 2 2...
Math - Use the Gauss-Jordan method to solve the equation: 3x-5y-2z=-9 -4x+3y+z=...
Pre-Calculus - Solve for x,y,z, & w using the Gauss-Jordan Elimination ...
Pre-Calc - I have to solve these using matrices by hand. Can someone please help...
Algebra - Find all solutions to the following system of equations: x + 3y + 2z...
Math - How do I solve these problems, I really need help. Solve by substitution ...
Discrete Math - I am really stuck on these problems. I've worked a lot of ...
math - solve by elimination 5x+3y+5z=-16 2x+5y-z=-26 x-4y+2z=10
For Further Reading