Question

resolver:
1) 5x+4=1-x
2) (3) (x-5) = 6
3) (4) (2x+1) = x+4
4) (3-x) = (3) (x+5)​

Answer 1

Respuesta:

$5x + 4 = 1 - x\\5x + x = 1 - 4\\6x = - 3\\x = - 3 / 6\\x = - 0.5\\\\3x - 15 = 6\\3x = 6 + 15\\x = 21 / 3\\x = 7\\\\8x + 4 = x + 4\\8x - x = 4 - 4\\8x = 0\\x = 0 / 8\\x = 0\\\\3 - x = 3x + 15\\- x - 3x = 15 + 3\\- 4x = 18\\x = 18 / - 4\\x = - 4.5$