SOLUTION: what us the solution set for these two problems using the substitution method? 4x-3y=29 3x+6y=-36

Algebra ->  Expressions-with-variables -> SOLUTION: what us the solution set for these two problems using the substitution method? 4x-3y=29 3x+6y=-36      Log On


   

Question 758261: what us the solution set for these two problems using the substitution method?
4x-3y=29
3x+6y=-36
Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
what us the solution set for these two problems using the substitution method?
4x-3y=29
3x+6y=-36
..
4x-3y=29
3y=4x-29
y=%284x-29%29%2F3
..
3x+6y=-36
3x%2B6%284x-29%29%2F3=-36
LCD:3
9x%2B6%284x-29%29=-108
9x+24x-174=-108
33x=66
x=2
y=%284x-29%29%2F3
y=%284%2A2-29%29%2F3=-21%2F3=-7
{x|x=2}
{y|y=-7}
Check:
4x-3y=29
4*2-3*-7=8+21=29
3x+6y=-36
3*2+6*-7=6-42=-36