Question

1 resolva as equações de 1 grau com uma incognita
A) 17x-7x=x=18
B x+x-4=17-2x+1
C x+2x+3-5x=4x-5
D 5x+6x-16=3x+2x_4
PFV MIM AJUDEM RAPIDO...

Answer 1

A)

$\sf17x - 7x - x = 18\\10x - x = 18\\9x = 18\\\\\boxed{\sf x = \cfrac{18}{9} = 2}$

B)

$\sf x + x - 4 = 17 - 2x + 1\\2x - 4 = 17 - 2x + 1\\2x - 4 + 2x = 17 + 1\\2x + 2x = 17 + 1 + 4\\4x = 22\\\\\boxed{\sf x = \cfrac{22}{4} = 5.5}$

C)

$\sf x + 2x + 3 - 5x = 4x - 5\\3x + 3 - 5x = 4x - 5\\3x - 5x = 4x -5 - 3\\3x - 5x - 4x = -5 - 3\\-2x - 4x = -5 - 3\\-6x = -8\\-x = -8/-6\\\\ \boxed{\sf x = \cfrac{4}{3}}$

D)

$\sf 5x + 6x - 16 = 3x + 2x - 4\\11x - 16 = 5x - 4\\11x - 16 - 5x = -4\\11x - 5x = -4 + 16\\6x = 12\\x = \cfrac{12}{6}\\\\\boxed{\sf x = 2}$