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pokotal
@pokotal
January 2021
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Pouvez vous m'aidez svp !! 18 points
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winner123
Verified answer
Bonjour
x + y = - 4
3 x - y = 0
x = - 4 - y
3 ( - 4 - y) - y = 0
- 12 - 3 y - y = 0
- 4 y = 12
y = - 3
x + y = - 4
x - 3 = - 4
x = - 4 + 3 = - 1
x = - 1
x - y = 1
0.5 x + y = 2
x = 1 + y
0.5 ( 1 + y) + y = 2
0.5 + 0.5 y + y = 2
1.5 y = 2 - 0.5
1.5 y = 1.5
y = 1
x - y = 1
x - 1 = 1
x = 1 + 1
x = 2
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Thanks 1
pokotal
merci beaucoup ;-)
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Verified answer
Bonjourx + y = - 4
3 x - y = 0
x = - 4 - y
3 ( - 4 - y) - y = 0
- 12 - 3 y - y = 0
- 4 y = 12
y = - 3
x + y = - 4
x - 3 = - 4
x = - 4 + 3 = - 1
x = - 1
x - y = 1
0.5 x + y = 2
x = 1 + y
0.5 ( 1 + y) + y = 2
0.5 + 0.5 y + y = 2
1.5 y = 2 - 0.5
1.5 y = 1.5
y = 1
x - y = 1
x - 1 = 1
x = 1 + 1
x = 2