Posted by Anonymous on Friday, April 20, 2012 at 9:54pm.
Solve system of equations algebraically.
1. 3x3y=24 and 2x+5y=37
2. 9x+10y=2 and 45x50y=11
3. 9x3y=3 and 18x+6y=6
4. 5x6y=23 and 8x+7y=29
5. 9x7y=4 and 5x+3y=46

MATH  Reiny, Friday, April 20, 2012 at 11:10pm
I will do the last one, you do the others
5.
9x  7y = 4
multiply each term by 3 > 27x  21y = 12
5x + 3y = 46
multiply each term by 7 > 35x + 21y = 322
add these last two equations
62x = 310
x = 5
sub into
5(5) + 3y = 46
3y=21
y = 7
x= 5, y = 7
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