<PRE><B>Question 1057037</B>
1) x + 9y = 28 (Note I think you meant 9y)
:
2) -5x + 8y = 19 
:
solve equation 1) for x
:
x = 28 - 9y
:
substitute for x in equation 2)
:
-5(28 - 9y) + 8y = 19
:
-140 + 45y + 8y = 19
:
53y = 159
:
y = 3
x = 28 - 9(3) = 1
:
**************************************************************
x = 1 and y = 3
:
check the answer by substituting for x and y in equation 2)
:
-5(1) + 8(3) = 19
:
-5 + 24 = 19
:
19 = 19
:
our answer checks
**************************************************************
:
</PRE>