Question

C) 4y-6=2y

d) 6y+30=2y-2




alguém me ajuda por favor agradeço quem me ajudar blz​

Answer 1

E aí, suave?

Resposta & Explicação:

A) 2x = 17

$2x -7 = 10\\2x = 10 + 7\\2x = 10 + 7\\2x = 17$

B) x = 3

$5x - 7 = 2x + 2\\5x - 2x - 7 = 2\\5x - 7 = 2x + 2\\5x - 2x = 2 + 7\\5x - 2x = 2 + 7\\3x = 2 + 7\\5x - 2x = 2 + 7\\3x = 9\\3x = 9\\x = 3$

C) y = 3

$4y-6=2y\\4y=2y+6\\4y-6=2y\\4y-2y=6\\4y-2y=6\\2y=6\\2y=6\\y=3$

D) y = - 8

$6y+30=2y-2\\6y-2y+30=-2\\6y+30=2y-2\\6y-2y=-2-30\\6y -2y=-2-30\\4y=-2-30\\6y-2y=-2-30\\4y=-32\\4y=-32\\y=-8$

Boa sorte! ;P