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TainaAraujo1609
@TainaAraujo1609
December 2019
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1)O valor numérico da expressão obtida, sabendo que x-2=5 e x+2y=-27?
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1052jeff112
X-2=5
x+2y=-27
x-2=5
x=5+2
x=7
x+2y=-27
7+2y=-27
2y=-27-7
2y=-34
y=-34/2
y=-17
2 votes
Thanks 1
ClariAjuda
X - 2 = 5
X + 2y = -27
|||///|||\\\|||///|||\\\|||///|||\\\|||///|||\\\|||///|||\\\|||///|||\\\|||///|||\\\|||
X = 5 + 2
________
X + 2y = -27
__________
5 + 2 + 2y = -27
7 + 2y = -27
2y = -27 -7
2y = -34
y = -34 ÷ 2
y = -17
|:::::|:::::|:::::|:::::|:::::|:::::|:::::|:::::|:::::|
7 - 2 = 5
5 = 5 (v)
//////
7 + 2 · -17 = -27
7 + -34 = -27
-27 = -27 (v)
|:::|:::|:::|:::|:::|:::|:::|
S= (7;-17)
Espero ter ajudado... Bjos - Boa Sorte!!
1 votes
Thanks 1
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x+2y=-27
x-2=5
x=5+2
x=7
x+2y=-27
7+2y=-27
2y=-27-7
2y=-34
y=-34/2
y=-17
X + 2y = -27
|||///|||\\\|||///|||\\\|||///|||\\\|||///|||\\\|||///|||\\\|||///|||\\\|||///|||\\\|||
X = 5 + 2
________
X + 2y = -27
__________
5 + 2 + 2y = -27
7 + 2y = -27
2y = -27 -7
2y = -34
y = -34 ÷ 2
y = -17
|:::::|:::::|:::::|:::::|:::::|:::::|:::::|:::::|:::::|
7 - 2 = 5
5 = 5 (v)
//////
7 + 2 · -17 = -27
7 + -34 = -27
-27 = -27 (v)
|:::|:::|:::|:::|:::|:::|:::|
S= (7;-17)
Espero ter ajudado... Bjos - Boa Sorte!!