college math 209
posted by Anonymous .
find the values for x and y
4x  9= 15
3x  4y = 22

college math 209 
Henry
Eq1: 4X  9 = 15
Eq2: 3X  4Y = 22.
Solve for X in Eq1:
4X  9 = 15,
4X = 15 + 9,
4X = 6,
X = 6/4 = (3/2).
Substitute 3/2 for X in Eq2:
3(3/2)  4Y = 22,
(9/2)  4Y = 22,
Multiply both sides by 2:
9  8Y = 44,
8Y = 44 + 9 = 53,
Y = (53/8).
You show only 1 variable in Eq1; i
assumed that is correct.
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