Question 908650
1/4a + b/2 + c = 23/4
.....
4a + 2b + c = 2
<u>a + b + c = 7</u> Subtract 2nd from 1st EQ
3a + b = -5
..........
a + b + c = 7
<u>1/4a + b/2 + c = 23/4</u> Subtract 2nd from 1st EQ
 3/4a=  -5/4
..............
3a + b = -5
<u>3/4a + 1/2b = -5/4</u>|multiplying thru by -2 to  eliminate the b variable by adding the Eqs
3/2a = = -15/2
a = -5, b = 10 {{{-15 + b = -5}}} and c = 2 {{{-5 + 10 + c = 7}}}