find the value of y from the system of equations x-y=2,x+2y=-4
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Answered by
2
Answer:
x-y=2,. (1)
x+2y=-4. (2)
subract above equation (1) from (2)
x+ 2y = -4
x- y. = 2
y = -2
Answered by
0
ANSWER :
x-y=2 -----(1)
x+2y=4 -----(2)
Subtract (1) from (2)
(-) x+2y=4
x-y =2
________________
3y=2
y=2/3
Substitute y=2/3 in (1)
x-y=2
x-2/3=2
x=2+2/3
x=8/3
THEREFORE x=8/3 AND y=2/3
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