Question 68856
x+y=12
x=12-y now replace x by (12-y) in the other equation thus:
(12-y)+3/2y=3/2
12-y+3/2y=3/2
-y+1.5y=1.5-12
.5y=-10.5
y=-10.5/.5
y=-21 answer.
now substitute 21 for y and solve for x thus:
x-21=12
x=12+21
x=33 answer
proof
33+3/2*-21=3/2
33-63/2=3/2
33-31.5=1.5
1.5=1.5