Posted by Kelly on Saturday, February 25, 2012 at 8:20pm.
1.5x+4y=8
x+y=7
Please help me solve this system of equation and show your work.

Math  Reiny, Saturday, February 25, 2012 at 8:34pm
I would multiply the 2nd equation by 4, then subtract ...
5x+4y=8
4x+4y=28
x = 20
sub into 2nd
20 + y = 7
y = 27
x = 20 , y = 27

Math  Piggy, Saturday, February 25, 2012 at 8:40pm
5x + 4y = 8
x + y = 7
Find x :
x = 7  y
5(7  y) + 4y = 8
35  5y + 4y = 8
y = 8  35
y = 27
x = 7 + 27
x = 34
y = 27
x = 34
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