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Mathematics
Dakota Frost
5 October, 17:16
Solve the equation
- 9x - 2y=-12
2x+5y=-11
X=
Y=
+2
Answers (
1
)
Bambi
5 October, 21:02
0
Answer:x=2, y=3
Step-by-step explanation:
solving this equation simultaneously
-9x - 2y=-12 ... (1)
2x + 5y=-11 ... (2)
Using elimination method
Multiply equation 2 by 2 and equation 1 by 5
-45x - 10y = - 60 ... (3)
4x + 10y=-22 ... (4)
Subtracting equation 2 from 1
-41x + 0=-82
41x=82
x=82/41
X=2
To find y put x in equation 1
-9x - 2y = - 12
-9 (2) - 2y=-12
-18-2y=-12
-2y=-12+18
-2y=6
Y = 6/2
Y=3
X=2, Y=3
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