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Jayp
@Jayp
December 2019
1
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Se:
A= -2x+4y+5
B= 2x+2y-3
C= 4x-y+4
então qual o valor de A-B+C ?
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GowtherBr
Vamos lá :
A = - 2x + 4y + 5
B = 2x + 2y - 3
C = 4x - y + 4
A - B + C
= (-2x + 4y + 5) - (2x + 2y - 3) + (4x - y + 4)
= - 2x + 4y + 5 - 2x - 2y + 3 + 4x - y + 4
= - 2x - 2x + 4x + 4y- 2y - y + 5 + 3 + 4
= y + 12
Espero ter ajudado !!!
2 votes
Thanks 2
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Lista de comentários
A = - 2x + 4y + 5
B = 2x + 2y - 3
C = 4x - y + 4
A - B + C
= (-2x + 4y + 5) - (2x + 2y - 3) + (4x - y + 4)
= - 2x + 4y + 5 - 2x - 2y + 3 + 4x - y + 4
= - 2x - 2x + 4x + 4y- 2y - y + 5 + 3 + 4
= y + 12
Espero ter ajudado !!!