Question

1) Equação do primeiro grau
a) 2x = 56
b) 3x = 108
c) 4x = 200
d) 5x = 255
e) 6x = 360
f ) 7x = 84
g) 2x + 5 = 21
h) 3x + 6 = 30
i ) 4x + 10 = 50
j ) 5x + 25 = 35
k) 6x + 12 = 36
l) 7x + 8 = 50

Answer 1

olá !!!

$a)\\2x=56\\x=56/2\\x=28\\\\b)\\3x=180\\x=180/3\\x=60\\\\c)\\4x=200\\x=200/4\\x=50\\\\d)\\5x=255\\x=255/5\\x=51\\\\e)\\6x=360\\x=360/6\\x=60$

$f)\\7x=84\\x=84/7\\x=12\\\\g)\\2x+5=21\\2x=21-5\\2x=16\\x=8\\\\h)\\3x+6=30\\3x=30-6\\3x=24\\x=24/3\\x=8\\\\i)\\4x + 10 = 50\\4x=50-10\\x=40/4\\x=10\\j)\\5x + 25 = 35\\5x=35-25\\5x=10\\x=10/5\\x=2\\k)\\6x + 12 = 36\\6x=36-12\\6x=24\\x=24/6\\x=4\\l)\\7x + 8 = 50\\7x=50-8\\7x=42\\x=42/7\\x=6$

espero ter ajudado

Att: Jovem Lendário